To add a bit of colour to your excellent teardown description, the optical pick-up is similar to a CRT, but it does the opposite role (light in, electrical signal out) For many years (1940s to 1960s) the standard type was called a Vidicon, and it was only capable of a black and white image. Later developments for TV studio use had an optical beam splitter that fed three tubes through colour filters for RED, GREEN, and Blue light components. The Vidicon was replaced by the Plumbicon (1962) that had greater sensitivity and less image lag (sticking or ghosting of a fixed image) by using a lead-oxide target. The three-tube cameras made excellent images, but were too expensive, and also too hard to set up each time, for the consumer video market. In the 1980s there was development of twin and then single tube colour pick up tubes, aimed at ready-to-use amateur cameras and portable video recording. The single tube has a colour filter on the faceplate, consisting of diagonal strips. Clever electronics can de-scramble the R, G, B light components. (using ultrasonic glass delay lines, that are those fat black rectangular components on the PCB) The single tube emerged as the champion for its simplicity, and more light sensitive and with burn resistance low-lag target layers called SATicon (1973) and NewVicon (late 70s) tubes. This were further made smaller (25mm to 18mm to 12mm) which made the zoom lens smaller and lighter and with a wider focal length ration (6:1 then 8:1, then 10:1 and 12:1) Towards the end of the 1980s MOS (Metal Oxide Semiconductor) and CCD (Charge-coupled-device) image "chips" replaced the vacuum tube pickup tubes completely. Looking back, the 1980s were the "golden age" of consumer video engineering. I miss the 1980s! Well done on your teardown, and presumably the camera in question is still working.
@jj74qformerlyjailbreak3
Жыл бұрын
This should be the pinned. comment above. Thank you sir for sharing. Edits are corrected mistakes made by dumb phones. 😂 Merry Christmas
@KrisCochrane
Жыл бұрын
Pinned!
@KrisCochrane
Жыл бұрын
Cheers for the added info.
@jj74qformerlyjailbreak3
Жыл бұрын
@@KrisCochrane NP TY.
@DavidWatts
5 жыл бұрын
Loved it
@KrisCochrane
5 жыл бұрын
Cheers pal!
@TheEmbeddedHobbyist
5 жыл бұрын
It will use a vidicon tube and to get a colour signal it might need to move filters in front of the tube , that's my guess. Nice old bit of kit. I remember using a reel to reel vider camera at school in about 1969 or 70. My junior school was on tomorrow's world tv show.
@KrisCochrane
5 жыл бұрын
Cheers! I loved TW...miss that show! Randomly, my favourite band (The Divine Comedy) did the theme tune for it! Search YT for "In pursuit of happiness + divine comedy and see if you recognise it!
@msylvain59
5 жыл бұрын
Did you notice the daughter board with the black delay line seems to be made of ceramic, if it is, must be the largest ceramic based PCB I have ever seen
@pstonard
2 жыл бұрын
The little drum near the zoom lens is a servo motor, it moves the lens iris in front of the pick up tube to moderate the light (going from indoors to full sun) Much like your human eyes adjust.
@jackmilne9764
5 жыл бұрын
My brothers into photography i brought him one like that to basically have on a shelf. Any idea how to hook it up to a 12v power supply? Be a waste of money buying a lead if it doesnt work
@childscraig
5 жыл бұрын
I remember these from my time at Comet in Renfrew, we would get the odd one in for repair. The dew warning is actually for the recorder, not the camera, dew would form on the helical drum (the bit with the pickup heads), if you put a tape in when the drum had dew drops formed the tape would stick to the drum and make an almighty mess inside, then you would bring it to Comet for repair! VHS players had dew warnings also, they were mostly for post delivery dew but a lot of houses had no central heating and the lounge had a gas fire, this also caused dew to form inside the machine on cold mornings. Ah the glory days of repairable electronics...
@jackmilne9764
2 жыл бұрын
Can you film today's world on jt if you still have it please?
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