Tubes

Cathode ray tubes as objects and as components: bare tubes, cutaways, electron guns, shadow masks and aperture grilles, phosphor screens, leaded funnels, projection tubes, the flat tube in a pocket television, and the last enormous direct-view screens. Also the receiving valves that sat in a chassis, which is a narrower category than it sounds, since the wider vacuum tube world is mostly radar, X-rays and hi-fi.

Part of Television

149 moments in this segment.

1. 1897 - Cathode Rays Figure 4. Figure 4 from Thomson's 1897 paper Cathode Rays. The apparatus measures how far a beam bends under a magnetic field, the same effect a deflection yoke later exploited to paint a picture. It is a published figure rather than a photograph.
2. 1897 - JJ Thomson exp2. A diagram of Thomson's 1897 cathode ray experiment, showing the ray in blue being bent by an electric field in yellow. Deflecting a beam under electrical control is the single effect every picture tube depends on, so this experiment is the direct ancestor of the television screen.
3. 1933 - Kombinierter Fernseh- und Rundfunkempfänger. A combined television and radio receiver made by Telefunken, photographed in 1933. Combining the two in one cabinet was normal at this date, because a household buying a television was buying its first one and already owned a radio worth matching.
4. 1935 - 1930s VACUUM TUBE MANUFACTURING DOCUMENTARY (SILENT) WESTERN ELECTRIC CO. VALVES 17974. Silent 1930s footage of vacuum tube manufacturing at Western Electric. Pre-war tube making is almost entirely hand work, which is why the labour is so visible.
5. 1936 - 1936 Marconi television Musée EDF Electropolis photo 1. A Marconi television of 1936, photographed at the Musée EDF Electropolis in Mulhouse, France. 1936 is the year Britain began its high definition service from Alexandra Palace, alternating Baird's mechanical system with Marconi-EMI's electronic one.
6. 1936 - FE VI inBetrieb a. German mirror television made by AEG/Telefunken, from 1937. The cathode ray tube (CRT) which produces the image is in the cabinet and is viewed in the mirror, which can be folded down when the set is not in use. The correct model name mayTelefunken FE V (1936/37)[1].
7. 1937 - FE VI inBetrieb b. A German Telefunken mirror television of 1937 in operation, showing the interval card of the Paul Nipkow television transmitter in Berlin. The phosphor looks beige-brown under room light but fluoresces bluish white when driven, which is why the working screen looks nothing like the dormant one.
8. 1939 - RCA 1939 console television television. An RCA console television of about 1939, from the range launched around the New York World's Fair. Pre-war American production was small, only seven to eight thousand sets against roughly nineteen thousand in Britain, and the American market really begins in 1946.
9. 1940 - AT&T Archives: A Modern Aladdin's Lamp, about vacuum tubes,1940. A Modern Aladdin Lamp, a 1940 Bell System film about vacuum tubes, from the AT&T archive. The thermionic valve is the component that made electronic television possible and the component that made early sets run hot enough to need ventilated cabinets.
10. 1941 - Electrons on Parade - How Vacuum Tubes were made, worked and used in 1941. Electrons on Parade, a 1941 film on how vacuum tubes were made, worked and were used. Wartime is the hinge: the War Production Board halted manufacture of television and radio equipment for civilian use from 22 April 1942 to 20 August 1945.
11. 1946 - 8D21 vacuum tube, VHF dual tetrode, RCA, introduced 1946 for 5 KW television transmitters - National. Exhibit in the National Electronics Museum, 1745 West Nursery Road, Linthicum, Maryland, USA. All items in this museum are unclassified. The museum permitted photography without restriction.
12. 1946 - MoMI RCA TV. A ten inch RCA television of 1946 at the Museum of the Moving Image. Ten inches was a large screen in 1946 and the tube behind it dictated a cabinet deeper than it was wide.
13. 1946 - RCA 621TS Television Receiver (1946) with optional blonde cabinet, MoMI. An RCA receiver of 1946 in a blonde wood cabinet, at the Museum of the Moving Image. 1946 is where the American television market really begins, after the War Production Board halted civilian set manufacture between 1942 and 1945.
14. 1946 - RCA 630-TS Television. RCA Model 630-TS television set seen in a museum. Its caption indicates it was the first mass produced TV set and was sold in 1946 and 1947.
15. 1946 - RCA 630TS Television Receiver (1946), MoMI. An RCA receiver of 1946 at the Museum of the Moving Image, with a rectangular mask over a round tube face. Masking a round tube to look rectangular was standard until tubes themselves were made rectangular.
16. 1948 - Motorolagoldenviewchassis. The underside of the chassis of a 1948 Motorola seven inch receiver, showing point to point wiring between valve sockets. Every joint here was made by hand, which is why sets of this period were repairable and why a service trade existed to repair them.
17. 1949 - Bush TV12 vintage tv. A British made Bush television of 1949, this example the Birmingham or Midlands variant rather than the London one. Sets were built to different variants because each transmitter region used a different frequency, so the receiver had to be matched to where it would be sold.
18. 1949 - Emerson1949. An American Emerson receiver of 1949 built around a 7JP4 picture tube. The tube type is the set's defining specification, a seven inch round face with the standard white phosphor of the period.
19. 1949 - Московский радиозавод - запуск в производство телевизионных приёмников "Т-1" (кинохроника, 1951 г.). The Moscow radio works starting production of T-1 television receivers, from the Russian state film and photo archive. This is the beginning of Soviet mass television manufacture.
20. 1950 - Televisore CRT, bianco e nero, 15 pollici, da tavolo, a valvole - Telefunken TTV 7/17.. Televisore in legno con profili smussati. La parete frontale, in legno verniciato grigio chiaro è quasi completamente occupata dallo schermo 15 pollici del cinescopio rettangolare, protetto da un vetro Sotto allo schermo si trovano quattro manopole per la regolazione della qualità dell'immagine Sul lato destro si hanno un interruttore per l'accensione e un selettore per le bande VHF e i rispettivi canali (da A a N) Sul retro è posto un pannello forato in materiale ligneo che funge da coperchio; da esso fuoriece in posizione mediana una sporgenza metallica a forma di cupola che protegge la coda del cinescopio (non visibile). Sulla fascia sottostante la sporgenza, sono visibili le boccole per.
21. 1950 - Televisore CRT, bianco e nero, 19 pollici, da tavolo, a valvole. Questo televisore è contenuto in un mobile in legno squadrato, con la superficie un po' rovinata La parete frontale è quasi interamente occupata dallo schermo del cinescopio rettangolare da 19 pollici, protetto da un vetro. Sotto allo schermo si hanno tre manopola probabilmente per l'accensione e la regolazione del volume, la regolazione dei toni e della luminosità (o del contrasto) e un selettore per la selezione delle bande e la sintonia dei canali. Al centro, tra le manopole, uno sportello apribile in plastica copre altre cinque manopole per la regolazione della visione sullo schermo Sul rettro è alloggiato un pannello che potrebbe essere non pertinenente in quanto è di dimensioni inferio.
22. 1950 - Televisore CRT, bianco e nero, da tavolo, a valvole. Televisore in legno e radica con profili arrotondati. La parete frontale è quasi completamente occupata dallo schermo del cinescopio rettangolare, protetto da un vetro Sotto allo schermo si hanno 3 comandi per la regolazione del contrasto (e per l'accensione), della luminosità, del volume e un selettore per i canali (da 1 a 5) con rotella per la sintonia Ai lati si hanno delle griglie a protezione dell'altoparlante e per l'aerazione Il retro è costituito da un pannello forato per l'aerazione. Fuoriesce il cavo di connessione alla rete elettrica All'interno si ha il circuito a valvole con cinescopio rettangolare con deflessione a 70° e due altoparlanti.
23. 1950 - The Manufacture of Radio Valves Presented by Mullard. The Manufacture of Radio Valves, a Mullard company film. This copy comes from a named valve company rather than an anonymous re-upload; a better-known upload of the same film blocks embedding entirely. Valve making is the direct ancestor of tube making: same glass, same vacuum, same getter.
24. 1952 - Baird Coronation Fifteen (C1815) Television, 1952, front. a project for the future, a 1952 Baird C1815 coronation 15. Priced at over 100 guineas when new which equates to over £3000 in today's money. 405 line, B&W, 15in picture with plug-in modules and an aftermarket band 3 ITV converter.
25. 1952 - Televisore CRT, bianco e nero, da tavolo, a valvole - Philips TX 1410 U.. Televisore di forma squadrata, in legno. Sulla parete frontale è presente un'apertura rettangolare dove è visibile lo schermo rettangolare del tubo catodico (cinescopio), protetto da un vetro Sotto allo schermo si ha una rete in tessuto e delle liste in legno a protezione dell'altoparlante. Ai lati dell'altoparlante sono presenti 4 comandi a manopola in bachelite con le seguenti funzioni: sincronismo orizzontale e verticale, contrasto/luminosità, canale/sintonia (canali preselezionati da 1 a 10), tono/volume/interruttore All'interno del televisore sono presenti il circuito a 24 valvole con il tubo catodico posto in orizzontale e un altoparlante magnetodinamico circolare.
26. 1955 - Televisore CRT, bianco e nero, da tavolo, a valvole - Kennedy KE 4167.. Televisore con mobile in legno squadrato e con fronte in materiale plastico bianco e profili color oro. Poggia su piedi in metallo color oro, storti Gran parte della parete frontale è occupata dallo schermo rettangolare del cinescopio, protetto da un vetro A destro dello schermo, in colonna, si trova la spia di accensione, una griglia in plastica che protegge l'altoparlante interno, 4 manopole per la regolazione di luminosità 1°, luminosità 2°, contrasto, volume, 4 tasti per le selezioni: video, tono, int, 2° P.R Sulle pareti laterali sono presenti griglie per l'aerazione Il retro, in metallo verniciato di nero, presenta, sul lato, un selettore per i canali da A ad I delle bande VHF e una ma.
27. 1955 - Vacuum Tubes/Valves by Mullard ~Manufacture for Audio TV Radio. Mullard valve manufacture for audio, television and radio. The same plant supplied all three, which is why television and radio manufacturing histories are inseparable in Britain.
28. 1955 - 1950s Documentary Hand Making Cathode-Ray Tube (CRT). A 1950s documentary showing a cathode ray tube being made largely by hand. Before automation, screening the phosphor and mounting the gun were craft operations.
29. 1956 - Original 1956 RCA Film: Vintage Television Electronics & Vacuum Tube Production, TV technology. An original 1956 RCA film on television electronics and vacuum tube production. RCA is the company whose patent position defined American television, and its own films are the best surviving record of its plants.
30. 1957 - MULLARD MADE FOR LIFE. Vintage Documentary. Mullard Made for Life, a company documentary held by a named film archive. Female labour dominated the coil-winding, wiring and final-assembly lines through the valve era in every producing country, and period factory film shows it plainly.
31. 1958 - Televisore CRT, bianco e nero, 20 pollici, da tavolo, a valvole - Braun TV70.. Televisore con mobile in legno scuro, di forma squadrata. Gran parte della parete frontale è occupata dallo schermo del cinescopio rettangolare da 20 pollici, protetto da un vetro Sotto allo schermo sono presenti il pulsante di accensione e uno sportello apribile. All'interno si trovano 5 piccole manopole per la regolazione di toni (bassi/acuti) e immagine (orizzontale e verticale), luminosità.
32. 1958 - Televisore CRT, bianco e nero, 21 pollici, da tavolo, a valvole - UndaRadio TS59.. Televisore in legno con profili e bordi arrotondati. La parete frontale, con bordi verniciati color beige, è interamente occupata dallo schermo 21 pollici del cinescopio rettangolare Sul lato destro si trovano un selettore per le bande VHF (con indicazioni da A ad H) e la regolazione della sintonia, tre manopole per la regolazione di contrasto, luminosità, accensione e volume. Le pareti laterali presentano griglie per l'aerazione e la protezione dell'altoparlante Il retro è coperto da un pannello forato per l'aerazione e il cinescopio sporge protetto da un coperchio cilindrico in metallo.
33. 1959 - Televisore CRT, bianco e nero, 17 pollici, da tavolo, a valvole - Phonola - FIMI Modello 1737 UHF.. Televisore con mobile in legno rivestito in materiale plastico color legno. Gran parte della parete frontale è occupata dallo schermo rettangolare del cinescopio rettangolare 17 pollici, protetto da un vetro. Intorno allo schermo il legno è verniciato di colore grigio.
34. 1960 - Televisore CRT, bianco e nero, da tavolo - Europhon Custom de Luxe.. Televisore con mobile in legno rivestito in materiale plastico e profili in plastica color bianco panna. Poggia su piedi in metallo Gran parte della parete frontale è occupata dallo schermo rettangolare del cinescopio, autoprotetto e sporgente A destro dello schermo, in colonna, si trovano tre manopole per la regolazione di volume, luminosità e contrasto, tre interruttori per la selezione delle bande, una manopola per la sintonia, un selettore per i canali. Sotto a questi comandi una griglia in plastica protegge l'altoparlante interno Il retro, in plastica nera, è forato per permettere l'aerazione e su di esso si trovano viti per la regolazione di ampiezza orizzontale, linearità orizzontale,.
35. 1960 - Color Picture Tube Plants. Footage of colour picture tube plants. Tube plants are a distinct subject from set assembly and are photographically richer.
36. 1960 - Making Television Picture Tubes at Mullard
37. 1962 - GA560, WF 1962. A measuring diode made at the Werk für Fernsehelektronik, rated for short duty only because at its maximum current of 50 mA the total service life is very limited. Components sold with a stated lifetime in hours were normal in valve era electronics, where everything was consumable.
38. 1962 - SRL459; WF 1962. Two air cooled transmitting tetrodes made at the Werk für Fernsehelektronik, rated 5 kW at 30 MHz and 3 kW at 100 MHz. Valves of this size sat in the transmitter rather than the receiver, which is where thermionic technology survived longest after receivers went solid state.
39. 1962 - ZA250, WF 1962. Zener diodes of the ZA250 series in all glass envelopes, silicon planar devices rated at 250 mW, made at the Werk für Fernsehelektronik in Berlin in 1962. A Zener diode holds a fixed reference voltage, and a television needs several stable references to keep its picture steady as the mains varies.
40. 1963 - B30M2; WF 1963. A round monochrome television picture tube made at the Werk für Fernsehelektronik in Berlin, 30 cm across the glass with a usable screen area of 18 by 20 cm. The round envelope wastes most of its face, which is why the usable rectangle is so much smaller than the tube, and why rectangular tubes replaced it.
41. 1963 - B53G1; WF 1963. A monochrome picture tube with 110 degree magnetic deflection and a 514.5 mm diagonal, about 20 inches, made at the Werk für Fernsehelektronik and photographed in October 1963. A 20 inch screen was a large domestic set in East Germany at this date.
42. 1963 - EF80; WF 1963. An EF80 pentode from the Werk für Fernsehelektronik, this example with gold plated pins. The EF80 was the standard video and intermediate frequency amplifier valve of European television, used in enormous numbers, and gold plating was for contact reliability rather than show.
43. 1963 - F7,5M3; WF 1963. A Superorthicon camera pickup tube made at the Werk für Fernsehelektronik, photographed in October 1963. The image orthicon was the sensitive camera tube that made live studio and outside broadcasting practical, and it sat at the opposite end of the chain from the picture tube in the viewer’s set.
44. 1963 - Televisore CRT, bianco e nero, 19 pollici, da tavolo, a valvole - Uranya 19" automatic bonded.. Televisore squadrato con mobile in legno rivestito in materiale plastico e profili e accessori in plastica color rame. Poggia su piedi in metallo Gran parte della parete frontale è occupata dallo schermo rettangolare del cinescopio autoprotetto rettangolare 19 pollici A destro dello schermo, in colonna, si trovano un selettore per i canali VHF (da A a H), tre manopole per la regolazione della sintonia, del volume e del contrasto, quattro tasti per la selezione di canali preselezionati Il retro, in plastica nera, è forato per l'aerazione. Sono presenti una rotella per la sintonia del 2° canale (UHF), i connettori per le antenne VHF e UHF (300 Ohm), viti per la regolazione della linearità e am.
45. 1963 - “ COLOR ” 1963 RCA COLOR TV TELEVISION PROMO / ADVERTISING FILM XD95645. A 1963 RCA colour television promotional film. Colour sets were approved in December 1953 and were a commercial failure for roughly a decade, so a 1963 sales film is aimed at a market that still had not arrived.
46. 1964 - 23LK1B; WF 1964. A round monochrome picture tube carrying a Soviet type designation, 12 inches across with a usable screen of 13.5 by 18 cm, made at the Berlin works that later became the Werk für Fernsehelektronik. An East German tube built to a Soviet designation shows how closely the Eastern bloc electronics industries were specified against each other.
47. 1964 - B43G2; WF 1964. A monochrome picture tube from the Werk für Fernsehelektronik with 110 degree magnetic deflection and a 400 mm diagonal. Widening the deflection angle to 110 degrees let the tube be shorter for the same screen size, which is what made shallower cabinets possible.
48. 1964 - B43M2; WF 1964. A monochrome picture tube built at the Werk für Fernsehelektronik using 70 degree magnetic deflection and magnetic focusing, with a 390 mm diagonal. A 70 degree tube is noticeably longer than a 110 degree one of the same screen size, so this design demanded a deeper cabinet behind it.
49. 1964 - B47G1; WF 1964. A monochrome picture tube from the Werk für Fernsehelektronik with 110 degree magnetic deflection and a 446 mm diagonal, about 17.5 inches. East German tube production was concentrated at this one Berlin plant, which supplied set makers across the republic.
50. 1964 - B53G1; WF 1964. A monochrome picture tube made at the Werk für Fernsehelektronik with 110 degree magnetic deflection. The tube was the single most expensive component in a television set and the one that fixed the shape of everything built around it.
51. 1964 - B59G1; WF 1964. A rectangular monochrome picture tube from the Werk für Fernsehelektronik with 110 degree deflection, a usable screen of 385 by 489 mm and a 566 mm diagonal, about 22 inches. Rectangular tubes ended the wasted glass of the round envelope and let the screen fill the front of the cabinet.
52. 1964 - EF860, WF 1964. EF860 pentodes from the Werk für Fernsehelektronik, the tube on the right carrying the "Q" quality mark. The Q mark was an East German state quality designation, applied to goods judged to meet export standard.
53. 1964 - Televisore CRT, bianco e nero, 23 pollici, da tavolo, a valvole e transistor - Brionvega Cygnus 23".. Mobile in materiale plastico dall'aspetto simil legno e di forma squadrata. La parete frontale è occupata dallo schermo del cinescopio e da una colonna che comprende la griglia che protegge l'altoparlante ellittico e alcuni comandi. Il cinescopio è autoprotetto da 23 pollici Sotto all'altoparlante si hanno il tasto di accensione, tre manopole per la regolazione di contrasto, volume, luminosità, una manopola per la selezione dei canali UHF da 20 a 70, un selettore per i canali VHF da A ad H con possibilità di regolazione fine della sintonia e un deviatore per la scelta della banda Il retro è in plastica nera, forato per l'aerazione.
54. 1965 - Televisore CRT, bianco e nero, 12 pollici, portatile, a transistor - Radio Allocchio Bacchini 12 P 31.. Apparecchio con mobile in legno, di forma squadrata con profili cromati e maniglia in metallo per il trasporto Lo schermo rettangolare del cinescopio 12 pollici autoprotetto con angolo di deflessione 90°, occupa quasi tutta la parete frontale. Alla destra dello schermo si hanno il selettore per i canali VHF da A ad H1 e una manopola per la sintonia dei canali UHF (indicazioni numeriche da 4,7 a 8,7), tre manopole per la regolazione di volume, luminosità e contrasto, due tasti uno (nero) per la selezione del 1° o 2° programma della televisione italiana e l'altro (rosso) con indicazioni S ed A Sul lato destro si ha una griglia in legno e tessuto a protezione dell'altoparlante circolare interno.
55. 1965 - Televisore CRT, bianco e nero, 18 pollici, da tavolo, a valvole e transistor - Emerson Viscount (Sky Radar. Televisore con mobile in legno rivestito in materiale plastico. La parte anteriore è in plastica beige con particolari color oro e argento. Poggia su piedi in metallo sporgenti Gran parte della parete frontale è occupata dallo schermo rettangolare del cinescopio, autoprotetto da 18 pollici A destro dello schermo, in colonna, si trovano una manopola per la selezione dei canali UHF (indicazioni numeriche da 21 a 75) e un selettore per le bande VHF (canali da 1 a 13), tre manopole per la regolazione del contrasto, della luminosità, del volume, un tasto per l'accensione Sul lato è presente un altoparlante circolare Il retro, in plastica nera, è forato per permettere l'aerazione e su di esso si.
56. 1965 - Производство ламповых телевизоров в СССР. Valve television production in the USSR. Soviet sets were built in volume across the union, at Moscow, Leningrad, Minsk, Lviv and elsewhere, and the plants have their own industrial film tradition.
57. 1966 - Naturally... in colour, a look inside a color picture tube factory.. Inside a colour picture tube factory, filmed as an industrial record. The sequence of operations is the whole subject of this facet: glass funnel and faceplate forming, frit sealing, phosphor screening, mask insertion, gun mounting, evacuation and getter flashing, then the ageing racks. A colour tube is thick leaded glass around a hard vacuum, and its weight, depth and danger all follow from that.
58. 1966 - RCA Tube Manufacturing In Lancaster PA (1966). RCA tube manufacturing at Lancaster, Pennsylvania in 1966, presented by Fran Blanche from period material. Lancaster was one of the RCA tube plants, and this is the kind of company film that shows the ageing racks and the getter flash that photographs almost never catch.
59. 1967 - Building A Tektronix Ceramic CRT 1967. Building a Tektronix ceramic CRT in 1967. The ceramic envelope is a variant on the usual glass, and the film records a construction method that never reached consumer televisions.
60. 1968 - 1968 HOW VACUUM TUBES are Made: English Electric Valve Co EEV Television Radio Radar CRT Cameras. A 1968 film on how vacuum tubes are made at English Electric Valve. By this date the domestic set was going solid-state, but valve manufacture continued for transmitting and specialist use.
61. 1970 - Tektronix CRT Manufacturing -- No Compromise with Quality. Tektronix CRT manufacturing, from the VintageTEK Museum. Instrument tubes were made to tighter tolerances than television tubes, so a Tektronix line shows the same processes done to a higher standard.
62. 1970 - Tektronix High-Volume CRT Production Line. The Tektronix high-volume CRT production line. Volume tube production is a chemical and vacuum process as much as an assembly one.
63. 1971 - Televisore CRT, bianco e nero, 24 pollici, da tavolo, a valvole e transistor - Brionvega Lunar VR 24".. Televisore con mobile in legno laccato poggiante su base con profilo in metallo La parete frontale è occupato dallo schermo del cinescopio da 24 pollici autoprotetto e con angolo di deflessione 110° e da una colonna di comandi. Sul lato destro infatti si hanno sei grossi fori circolari coperti con una rete metallica a protezione dell'altoparlante ellittico, due manopole doppie per la regolazione di contrasto/luminosità e volume/tono, due tasti per l'accensione e l'attivazione di un filtro colore. Si hanno inoltre, nella parte bassa, cinque linguette in plastica simil legno (numerate da 1 a 5) che hanno funzione di sportello, sollevando le quali si accede a sette tasti dei programmi ciascuno.
64. 1971 - 1971г. Москва. завод "Хроматрон". цветные кинескопы. Colour kinescopes at the Chromatron plant in Moscow, 1971. The Chromatron name is shared with the single-gun tube Sony licensed from Ernest Lawrence design and failed to mass-produce, a failure that was breaking Sony financially by 1966 and that the Trinitron rescued.
65. 1972 - Televisore CRT, a colori, 13 pollici, da tavolo, a transistor - Sony Trinitron KV 1300 E.. Televisore con mobile in legno laminato, schermo autoprotetto con profili in plastica color argento Il cinescopio da 13 pollici è a colori, Trinitron, con angolo di deflessione 90°. Alla destra dello schermo si ha una colonna di comandi. Un selettore per canali VHF (da 1 a 12), una manopola per la selezione dei canali UHF, una manopola per l'accensione e una per la regolazione del contrasto, un tasto per la scelta di regolazione automatica o manuale del colore, due manopole per la regolazione del tono colore e del colore Lateralmente si hanno due fenditure per l'impugnatura Il retro è in plastica nera verniciata di bianco ed è forato per l'aerazione.
66. 1973 - HT301; WF 1973; 6S5D. A UHF disc seal triode made at the Werk für Fernsehelektronik shown beside its Soviet equivalent. Disc seal construction keeps the electrodes flat and close together so the valve still works at ultra high frequencies, which is what UHF television broadcasting required.
67. 1973 - Televisore CRT, a colori, da tavolo, 25 pollici - Mivar Color T2S.. Mobile in legno di forma squadrata. La parete frontale, in materiale plastico grigio, è quasi interamente occupata dallo schermo rettangolare del cinescopio autoprotetto da 25 pollici A destro dello schermo, in colonna, si trovano una griglia che protegge l'altoparlante interno, 4 manopole per la regolazione del volume, del contrasto, per il bilanciamento del colore, per la luminosità, un interruttore a slitta per l'accensione, una manopola per la selezione delle bande e la regolazione della sintonia con indicazioni per bande UHF canali da 24 a 68, per bande VHF canali da A ad M (con possibilità di regolazione fine della sintonia), un interruttore per i programmi 1° e 2° della televisione it.
68. 1975 - Харьков. Завод "Элитан". Производство телевизоров.. Television production at the Elitan works in Kharkov. Ukrainian plants were a significant part of the Soviet television industry.
69. 1976 - Televisore CRT, a colori, da tavolo, a transistor - Phonola - FIMI Modello 1322 Colore.. Televisore di grosse dimensione, in materiale plastico grigio scuro La parete frontale è quasi interamente occupata dallo schermo autoprotetto del cinescopio rettangolare A destra dello schermo si ha una colonna di comandi e la griglia di protezione dell'altoparlante. Nella parte alta si hanno un display a Led, due tasti per accensione e mute, sotto uno sportello apribile nasconde dieci tasti con indicazioni da 0 a 9 per i canali preselezionati, quattro tasti con indicazioni 0. 1.
70. 1978 - Televisore CRT, a colori, 16 pollici, da tavolo, a transistor - Brionvega Spot 2A TVC16.. Televisore con mobile in plastica nera opaca e parete frontale occupata dallo schermo del cinescopio da 16 pollici autoprotetto con angolo di deflessione di 110. Il televisore poggia su una base in plastica nera. Sui lati sono applicate delle griglie in plastica a protezione dell'altoparlante e per l'aerazione Nella parte superiore si hanno una maniglia estraibile per il trasporto e, dietro ad uno sportello, i tasti per la commutazione ciclica dei programmi e i tasti per la regolazione della sintonia fine per la ricerca manuale dei canali.
71. 1978 - Televisore CRT, a colori, 20 pollici, da tavolo, a transistor - Brionvega Regolo TVC 20.. Televisore con mobile in legno verniciato e profili frontali in materiale plastico grigio scuro La parete frontale è quasi interamente occupata dallo schermo del cinescopio da 20 pollici superluminoso, autoconvergente, con geometria autocorretta Sotto allo schermo si hanno alcuni comandi per l'uso del televisore. Da sinistra verso destra si hanno uno sportellino a slitta dietro al quale si hanno una presa a norme DIN per il collegamento di un registratore esterno o di un amplificatore e una per allacciamenti esterni per cuffie e altoparlante, poi un altro sportello apribile che copre un vano per riporre il telecomando trasmittente (mancante), l'interruttore generale di accensione arancione e.
72. 1978 - Televisore CRT, a colori, da tavolo, 22 pollici - Brionvega TVC 5g 22".. Televisore con mobile in plastica bianca, dagli spigoli arrotondati e parete leggermente bombate. Lo schermo del cinescopio da 22 pollici autoprotetto occupa tutta la parete frontale Nella parte superiore si hanno i comandi d'uso. Si trova un interruttore di accensione azzurro, alcune leve per la regolazione di tono, volume, contrasto, luminosità, tinta, colore, sei tasti per la selezione di altrettanti programmi memorizzati.
73. 1979 - 1979г. Новгород. электровакуумный завод. цветные кинескопы. Colour kinescope production at the Novgorod electrovacuum plant in 1979. Soviet tube manufacture is almost invisible in English-language accounts of television hardware, and newsreel material like this is the main surviving record.
74. 1980 - Televisore CRT, a colori, 12 pollici, portatile, a transistor - Sylvania CAF 140 WA.. Apparecchio in materiale plastico simil legno con parte frontale nera e grigia che circonda lo schermo del cinescopio autoprotetto da 12 pollici. Sotto allo schermo si hanno i comandi d'uso: un selettore per l'accensione e la regolazione del volume, cinque rotelle solo parzialmente sporgenti per la regolazione color, tint, picture, bright, sharp, dieci tasti per la selezione dei canali memorizzati (da 0 a 9), due interruttori per passare ai canali successivi/precedenti. È inoltre presente un display a Led La parte superiore è sagomata per l'impugnatura, forata per l'aerazione.
75. 1981 - Televisore CRT, a colori, 18 pollici, da tavolo, a transistor - Grundig Super Color 1832 IT.. Apparecchio in materiale plastico rosso con profili arrotondati e una fascia nera posta trasversalmente. Nella parte superiore si ha una maniglia estraibile per il trasporto e due antenne incorporate a stilo Lo schermo del cinescopio, con profili in plastica color oro, occupa gran parte della parete frontale Il cinescopio è da 18 pollici autoprotetto e alla sua destra si hanno un display a Led e il tasto di accensione. Sul lato destro del televisore, in corrispondenza della fascia nera, si hanno tre tasti per la sintonia dei canali (selezione della banda) ovvero per VHF I da 2 a 4, VHF III da 5 a 12, UHF da 21 a 62, una manopola per la regolazione del volume, i tasti per la sintonia fine, un.
76. 1982 - Televisore CRT, a colori, 26 pollici, da tavolo, a transistor - Brionvega Coro T Hi-Fi TVC 26.. Televisore con mobile in legno laminato marrone e profili frontali in plastica nera La parete frontale è occupata dallo schermo del cinescopio e dal cruscotto dei comandi. Il cinescopio è da 26 pollici autoprotetto con angolo di deflessione di 110°, superluminoso a fosfori pigmentati, softflash, hi focus e autoconvergente Nel cruscotto si ha anche uno sportello porta telecomando trasmittente (mancante). Sotto allo sportello si hanno i comandi per il bilanciamento e per i toni bassi, le spie luminose per indicare la ricezione di un programma bilingue, l'inserimento dell'effetto bidimensionale, la ricezione di un programma con audio stereo e una presa per cuffie.
77. 1982 - Televisore CRT, bianco e nero, 13 pollici, da tavolo, a transistor - Seleco 14 SX 201.. Televisore con scocca squadrata in plastica grigio scura, sagomata nella parte alta a forma di vela. In questa parte la superficie è tutta a griglia per l'aerazione e la protezione dell'altoparlante La parete frontale è interamente occupata dallo schermo del cinescopio 13 pollici protetto da un vetro fumè Nella parte alta si hanno i comandi d'uso: tasto di accensione e spegnimento, 12 tasti per i canali preselezionati, tre manopole per la regolazione di volume, luminosità, contrasto e un'antenna a stilo estraibile Sul retro si ha una presa per antenna VHF e UHF e fuoriesce il cavo di collegamento alla rete elettrica. Funzione Apparecchio che riceve le immagini e i suoni trasmessi mediante il.
78. 1985 - Televisore CRT, a colori, 25 pollici, da tavolo, a transistor - Brionvega TVC Mod. Sintesi 25" HiFi. Televisore con mobile in legno laminato verde scuro e profili frontale e parte posteriore in plastica grigio scura. Poggia su un piccolo piedistallo cilindrico La parete frontale è occupata dallo schermo del cinescopio da 25 pollici superluminoso a fosfori pigmentati, softflash, hifocus e autoconvergente, coperto da un vetro fumè. Appena sotto lo schermo si ha un display visualizzatore a Led e di fianco si hanno un tasto di accensione, una presa jack per cuffia stereo e un tasto per l'esclusione degli altoparlanti.
79. 1985 - Televisore CRT, bianco e nero, portatile, a transistor - Mivar 9BN4V.. Apparecchio in materiale plastico rosso con profili arrotondati e smussati con cinescopio da 9 pollici autoprotetto. Sotto allo schermo si hanno una griglia in plastica rossa a protezione dell'altoparlante e i comandi d'uso: una rotella per la regolazione Video, una per l'Audio, un selettore per canali preselezionati (da 1 a 16), un pulsante d'accensione La parte superiore è sagomata per l'impugnatura, forata per l'aerazione. E' presente un'antenna estraibile orientabile Sul retro si ha una vite per la regolazione del contrasto, un connettore per l'alimentazione con batteria (12V), una presa per antenna e una per le cuffie Da sotto fuoriesce il cavo di connessione alla rete elettrica.
80. 1985 - CRT TUBE MANUFACTURING A63-11X PHILIPS - MULLARD Part 1. Philips and Mullard A63-11X colour tube manufacturing, first part. The A63 designation is a European tube type and the film follows it through the plant.
81. 1985 - CRT TUBE MANUFACTURING A63-11X PHILIPS - MULLARD Part 2. The second part of the Philips and Mullard A63-11X tube manufacturing record, carrying the process through to test. A picture tube is an electron gun, a deflection assembly and a phosphor screen inside a hard vacuum in thick leaded glass, and the weight and depth of every CRT set follow from that.
82. 1987 - Televisore CRT, 14 pollici, portatile, a transistor - Philips 14PT 156 B/00.. Apparecchio in materiale plastico nero opaco con scocca sagomata per l'impugnatura e il trasporto. La parete frontale è quasi interamente occupata dallo schermo del cinescopio 14 pollici. Sotto allo schermo si hanno tasto e spia di accensione, tasto Menu, tasti - e +, una presa audio/video, una presa per le cuffie Nella parte superiore si ha un'antenna estraibile orientabile Sul retro sagomato e con griglie per l'aerazione si hanno una presa per antenna, una presa Euroconnector e fuoriesce il cavo per il collegamento alla rete elettrica.
83. 1990 - Televisore CRT, bianco e nero, 5 pollici, portatile, a transistor - Roadstar TV-400N 5" Black &White TV Set.. Piccolo televisore portatile in materiale plastico nero, con schermo 5 pollici protetto da una lastra in plastica trasparente A destra dello schermo si ha una rotella per l'accensione e la regolazione del volume. Sotto allo schermo si ha una scala di sintonia per bande VHF-L (canali 2-3-4), VHF-H (canali da 5 a 12), UHF (da 21 a 69), con una rotella per la sintonia e un deviatore per la scelta della banda La parte superiore è sagomata per l'impugnatura. Nella parte superior si ha un antenna estraibile orientabile.
84. 1990 - SONY TRINITRON TV How was it Made ? - Japan VIDEO Electronics Television CRT Factory 1998. Japanese footage of Trinitron manufacture. The Trinitron aperture grille replaced the shadow mask holes with vertical slots: a 1950s RCA shadow mask blocked about 85 percent of the electron beam, an aperture grille about 25 percent. That roughly threefold gain in beam transmission is the entire Trinitron proposition, a much brighter picture.
85. 1991 - Tube de projection rouge Electrohome1 modèle ECP 4101 Sony SD187R avril 1991. This red tube is part of a tri-tube video projector dating from the 1990s and produced by the Canadian company Electrohome. (Acquired by Barco). A large lens focuses the image on a cinema screen.
86. 1992 - Loewe-TV. A first generation Loewe widescreen television of 1992 with D2MAC. D2MAC was a European transitional broadcast standard intended to bridge analogue and digital, and it was overtaken before it was ever widely adopted.
87. 1993 - Trinitron-bars-detail. Close-up of the phosphor bars on a Sony Trinitron colour television. Taken at speed significantly less than 1/25 second, so horizontal scanlines will be somewhat merged, leaving vertical (physical) phosphor bars.
88. 1995 - Loewe Planus CRT TV, 1995, front. A Loewe Planus receiver of 1995, built around a flatter than usual cathode ray tube. Flattening the faceplate was the CRT industry's answer to the coming flat panel, and it bought the tube another decade.
89. 1995 - CRT TUBE VIDEOCOLOR A66ECY03X01 PRODUCTION IN ANAGNI (ROME) FACTORY 1995. Production of a Videocolor A66ECY03X01 colour tube at the Anagni plant near Rome in 1995. European tube manufacture continued well into the 1990s; individual plant closure dates for the major CRT makers are not established, and only Videocon ceasing in 2015 is sourced as the end of large-scale manufacture.
90. 2003 - Korea Data Systems (KDS) X-Flat monitor. A Korea Data Systems flat faced cathode ray display of around 2003. Flat faced tubes arrived just as LCD was overtaking CRT in monitors, which happened between 2003 and 2004.
91. 2006 - Classroom2. Classroom in a junior high school in Japan. The uploader has removed all identifiable personal information from the image. The school shown in this photo has moved since the photo was taken.
92. 2006 - Duck Hunt on Panasonic television set. The Duck Hunt video game running on a Panasonic tube television in New York State. Light gun games only work on a cathode ray tube, because the gun detects the scanning beam itself, which is why collectors still keep tube sets for them.
93. 2007 - Braun HF 1. The Braun HF 1 of 1958, designed by Herbert Hirche and held by the Pinakothek der Moderne in Munich. Braun treated the receiver as a plain instrument rather than as furniture, a position associated with the Ulm school and with Dieter Rams, who is still alive and was born in 1932.
94. 2007 - Souverän59. A Souverän 59 television console, a receiver built into a low cabinet in the German style of the period. The set is furniture first, with the tube recessed behind a framed opening.
95. 2011-03-25 - One Minute Wonder: Thermionic Valves. A one-minute museum piece on thermionic valves from the REME Museum, filmed on real examples. A 1950s shadow mask blocked about 85 percent of the electron beam and had roughly 15 percent open area, which is the brightness problem the whole industry spent decades attacking.
96. 2011-10-26 - Discovery How Its Made - Cathode Ray Tubes (480p) -=KCK=-.mp4. A How It Is Made segment on cathode ray tubes, showing the industrial process end to end at the point when CRT production was still running at scale. From the late 1960s most colour sets used a rectangular slot mask rather than round holes, the forgotten middle term between the shadow mask and the aperture grille.
97. 2012-09-25 - TV-7 A/U Military Army Tube Tester. A TV-7 military tube tester demonstrated. The self-service tube tester in the American drugstore is the consumer version of this instrument: pull the valves, drive them to the shop, test them, buy the replacement from the cabinet below.
98. 2013 - Внешний вид функциональной электронно-лучевой трубки ЛФ2 1. The Soviet 'functional' (i.e. computing) LF2 cathode ray tube is designed to compute (x-y)/(x+y) ratio of two inputs (however, with a large error margin). The CRT was used in target selection and tracking hardware of Soviet air defense weaponry.
99. 2013 - Внешний вид функциональной электронно-лучевой трубки ЛФ4. Soviet 'functional' (i.e. computing) cathode-ray tube LF4. Right below, for scale, is the KT315 transistor with 2.54 mm lead spacing for scale.
100. 2013-07-11 - Vintage Olympus VX-303 Vidicon Camera Extreme Teardown. An Olympus VX-303 vidicon camera taken fully apart. The tube, its deflection assembly and its target are all visible.
101. 2014-09-28 - Hitachi vintage vidicon camera overview and partial teardown. A Hitachi vidicon camera partially torn down. The vidicon displaced the iconoscope for most non-broadcast work because it was small, cheap and did not need brutal light.
102. 2014-12-28 - Tesla Tube Factory Visit, Czech Republic 1998. A visit to the Tesla tube factory in the Czech Republic in 1998. Eastern European tube manufacture outlasted the Western consumer market by years.
103. 2015-01-17 - DDR-Museum Pirna Fernseher Rembrandt mit Wasserlupe 2015-01-17. A Rembrandt receiver fitted with a water lens, at the DDR Museum in Pirna. A water filled magnifier was clamped in front of a small tube to enlarge the picture optically, which was cheaper than buying a larger tube.
104. 2015-06-02 - RCA Iconoscope TV Camera: Looking out the window. An RCA iconoscope camera tube being used to look out of a window. Zworykin filed his television systems application on 29 December 1923, but the equipment described was never successfully demonstrated; iconoscope experiments began April 1931 and the tube was named on 23 October 1931.
105. 2016-01-20 - Tektronix CRT - a Look Back. The VintageTEK Museum looking back at the Tektronix CRT. A museum retrospective on a tube line, captioned as a museum account rather than a period record.
106. 2017-02-03 - CRT Tube Restore CR7000. A CRT tube restore using a Sencore CR7000 analyser. The CRT analyser and rejuvenator is the defining instrument of the tube-era service bench.
107. 2017 - Lines of Light: How Analog Television Works. How analogue television actually works, line by line, from Technology Connections. The scanning beam, the phosphor and the persistence of vision are the whole system, and the explanation is what makes the light gun and the scanline arguments legible later.
108. 2017-07-18 - CRT Rebuilding at the Early Television Museum
109. 2017-10-22 - EEVblog #1033 - Sony WatchCam Pocket Flat CRT Monitor Teardown. A teardown of the Sony WatchCam pocket flat CRT monitor. Sony flat tube bends the gun to fire across the screen rather than at it, which is how a cathode ray tube was made shallow enough to carry.
110. 2017-10-24 - Sony Watchcam Monitor Teardown. A Sony Watchcam monitor teardown from a named repair channel. Small tubes make the construction of a CRT unusually legible because the whole envelope fits on the bench.
111. 2017-12-30 - Trinitron: Sony's Once Unbeatable Product. Technology Connections on what the Trinitron actually did differently. Beyond the grille, Sony used a single electron gun with three cathodes in a row rather than three guns, developed by engineer Senri Miyaoka, which allowed permanent magnet focusing and removed post-manufacture convergence adjustment. The first Trinitron was the 12 inch KV-1210 of April 1968.
112. 2018-04-19 - B&K 490B and Sencore CR7000 Tube Restore. A comparison of a B&K 490B and a Sencore CR7000 for tube restoration. Two named makers of the instruments that shop technicians actually used.
113. 2018-04-22 - These Are Not Pixels: Revisited. On why a CRT image is not made of pixels. The shadow mask triad and the aperture grille stripe are not addressable picture elements, which is why emulating a CRT on a panel is hard.
114. 2018 - Die Welt der DDR. Televisions in use in the GDR. Including (where the makers' name is visible) a tube Rafena Patriot (first from left, bottom row), Rafena Rubens (second from left), a little blue Sanyo, a black Soviet Yunost and maybe more.
115. 2018-06-25 - Monoscope Camera Tube image CBS Television Network Hollywood Test Pattern. A monoscope camera tube producing a CBS test pattern. A monoscope is a tube with the pattern printed inside it, so the test card is literally a physical object rather than a signal.
116. 2018-09-16 - Sony PVM Restoration Part 1 - How to tear down the CRT. Tearing down a Sony PVM to get at the tube. Broadcast monitors were built to be serviced, which is why so many survive in working order.
117. 2019-01-25 - How to Rejuvenate an arcade CRT monitor [B&K 467]. Rejuvenating an arcade CRT with a B&K 467. Arcade monitors are where a large part of the surviving CRT service knowledge now lives.
118. 2019-02-07 - Sony Trinitron TV Color Purity & Convergence repairs. Colour purity and convergence repairs on a Sony Trinitron. Even without three-gun convergence, an aperture grille tube still needs purity and landing correct.
119. 2019-03-04 - RCA CTC15 Color Final Repair Purity Convergence Setup 1964 Color Television. Purity and convergence setup on a 1964 RCA CTC15 colour chassis. A shadow mask colour tube needed purity, convergence and degauss all set correctly before it could show a clean white.
120. 2019-07-06 - Swap it! CRT #1 - Tubes, Series vs Parallel Yokes, Inductance. Swapping CRTs, with the tube, yoke and inductance matching problems set out. This is the practical detail that decides whether a donor tube can be used at all.
121. 2019-11-08 - Flyback Transformer Teardown. A flyback transformer teardown. The flyback generates the tens of kilovolts the anode needs, and it is one of the most common failure points in any tube set.
122. 2020-03-23 - Vintage 1980s Vidicon CCTV Camera Teardown. A 1980s vidicon closed-circuit camera teardown. Tube cameras survived in industrial and security use long after broadcast moved on.
123. 2020-06-06 - Rejuvenating a Macintosh CRT with equipment from 1969. Rejuvenating a Macintosh CRT using equipment made in 1969. The instrument is older than the computer it is being used to repair, which is a fair summary of how CRT servicing survives.
124. 2020 - Orsk Local History Museum 79. A Soviet Avangard-55 television in the collection of the Orsk Local History Museum. Regional museums in Russia hold much of the surviving evidence of Soviet consumer manufacturing.
125. 2020-06-22 - Sony Trinicon Camera Teardown. A Sony Trinicon camera tube teardown. The Trinicon was Sony single-tube colour pickup, and opening one shows the striped filter that made single-tube colour possible.
126. 2020-07-03 - How a CRT degaussing wand works and taking it apart. Plus turning it into an electromagnet.. How a CRT degaussing wand works, taken apart. The degauss coil demagnetises the shadow mask, which otherwise holds a field that pushes beams onto the wrong phosphors and stains the picture with colour patches.
127. 2020-09-14 - 拆解黑白电视机同款CTR显像管套件，了解它的内部构造和成像原理. A Chinese teardown of a black and white picture tube kit, showing the internal structure and how the image is formed. Werner Flechsig first patented the shadow mask concept in 1938 and it was granted in 1941, with Al Schroeder at RCA developing the three-gun arrangement independently; the first tubes were made in 1950.
128. 2020-12-22 - CRT Cathode Heater Short. Can it be repaired?. A shorted CRT cathode heater and whether it can be repaired. Heater to cathode shorts are one of the standard end-of-life failures of a picture tube.
129. 2021-01-11 - How to fully check a Sony PVM M Series - PSU Voltage, CRT Beam, Service Menu & Must Change Caps!. How to check a Sony PVM M series properly, including beam current and the service menu. This is the diagnostic routine that decides whether a surviving professional tube has life left.
130. 2021-02-02 - How to Rejuvenate an Arcade Tube or CRT. How to rejuvenate an arcade tube, from a pinball and arcade workshop. The technique is identical to television practice because the tubes are the same family.
131. 2021-03-06 - Can I rejuvenate the CRT in my Mitsubishi Multisync monitor?. Attempting to rejuvenate the CRT in a Mitsubishi Multisync monitor, including the cases where it does not work. Honest failure is more useful here than a clean result.
132. 2021-06-22 - Arcade Monitor Repair - Basic Convergence Tutorial. A basic convergence tutorial for arcade monitors. Convergence is the alignment of the three beams onto their correct phosphors; the Trinitron single-gun design removed this whole class of adjustment.
133. 2021-07-31 - ブラウン管テレビで1964年東京オリンピックを再現してみました。. Recreating the 1964 Tokyo Olympics on a CRT television. The 1964 games were the event that put sets into Japanese homes, and the hardware is the point of the exercise.
134. 2021-11-06 - Talkin Vacuum Tubes With AL. A long conversation about vacuum tubes with a veteran technician. Oral knowledge of valve work is thinning fast and recordings like this are becoming the record.
135. 2022 - Baird 165 at the Early Television Museum June 2022. A Baird receiver at the Early Television Museum in Ohio, its screen showing a pink cast. A pink or discoloured screen usually means the phosphor or the tube's own coating has aged, which is common in surviving sets.
136. 2022 - Marconi 709, Baird T-23, and Baird T-18C at the Early Television Museum June 2022. Three British television sets of the 1930s displayed together at the Early Television Museum in Ohio, a Marconi and two Baird receivers. Britain built roughly nineteen thousand sets before the war, more than twice the American figure, and these are survivors of that run. They are museum objects.
137. 2022-07-22 - ViewSonic G220fb: An Awesome 21" CRT Monitor from 2003 for Retro Gaming. LGR on a ViewSonic G220fb, a 21 inch CRT monitor from 2003 kept for retro gaming. CRT computer monitor sales peaked in 2000 at 90 million units, five years before the television peak, and the two should not be merged.
138. 2022-09-12 - Cathode Ray Tubes (CRT): Explanation and Experiments. CuriousMarc on cathode ray tubes with live experiments, from a named engineering channel. Deflection, focus and the electron gun demonstrated on the bench rather than animated.
139. 2022-11-30 - Rejuvenating a color CRT. Rejuvenating a colour CRT. Rejuvenation runs the cathode hard to strip contamination and buy back emission, and it is the single most common intervention that keeps old tubes alive.
140. 2022-12-25 - Mitsubishi television set 2022-12-25. A Mitsubishi domestic television of undetermined date, probably from the 1960s, exhibited at the Nakano City Historical Museum in Tokyo. The museum records the date as uncertain, which is normal for consumer objects that arrived without documentation.
141. 2023-02-08 - Как отремонтировать кинескопный телевизор. Самая частая неисправность.. A Russian repair channel on the most common fault in a kinescope television. CRT sets ran later and longer in Russia, India, Brazil and Eastern Europe than in the West, and the repair culture followed.
142. 2023 - Setron television set, National Museum of Singapore. A Setron receiver in the National Museum of Singapore. Setron assembled sets in Singapore, part of the wave of Southeast Asian electronics assembly that followed Japanese manufacturing outward.
143. 2023-06-23 - CRT Testing, Repair and Rejuvenation Tips part 3. CRT testing, repair and rejuvenation tips from a restorer with a long series on the subject. CRT television sales peaked at 130 million units in 2005 and CRT computer monitors peaked separately at 90 million in 2000, so footage of tube production is documenting a category near its height.
144. 2023-09-30 - From junk to awesome: Fixing an old monitor by swapping the CRT. Fixing an old monitor by swapping the CRT itself. Tube swapping requires matching neck diameter, yoke and geometry, and it is the last resort before scrapping.
145. 2023-10-14 - 【エモい技術】いまさら聞けないブラウン管テレビの仕組みをこっそり学ぶ。【真空】【電子銃】/How does a CRT TV work?. A Japanese explainer on how a CRT television works, covering the vacuum and the electron gun. Japanese-language technical material on the tube is abundant and rarely surfaces in English searches.
146. 2025-02-13 - Why you Can & Can't repair a Bad Trinitron CRT. Why a bad Trinitron tube can and often cannot be repaired. The vertical grille wires force a vertically flat, horizontally curved screen, which is why a Trinitron looks cylindrical, and the horizontal damper wires that stop the grille vibrating are visible as faint lines on bright scenes. Collectors argue about those wires constantly.
147. 2025 - SONY Trinitron (Showa) at Namba Walk. A Sony Trinitron of the Showa era displayed at Namba Walk in Osaka. The Trinitron used a vertical aperture grille in place of a perforated shadow mask, which let more of the beam through and produced a brighter picture. The first Trinitron was the 12 inch KV-1210 of April 1968.
148. 2025 - Sampo TVA-2078 on Kangding Road. A Sampo colour television set up under the arcade of a shop on Kangding Road in the Wanhua district of Taipei. Sampo is a Taiwanese manufacturer, and putting the set in the covered walkway makes the pavement the viewing room.
149. 2025-12-27 - Valvo Picture Tube Factory History of Manufacture Brochure. A Valvo picture tube factory manufacturing brochure read as a document. Valvo was the German Philips subsidiary, and the brochure is a primary source on process order.