A Precision CRT 1955

Рет қаралды 8,852

7 жыл бұрын

Пікірлер: 24

@parochial2356 3 жыл бұрын

This is the industrial/technology world my Father lived in in the 40s and 50s. I understand better now why what fascinated and drove him did so. No wonder that he would be lost in out modern paradigm.

@georgegherghinescu 5 жыл бұрын

So much attention to detail, what amazing people! Now everything is automatic and that's really great: you get awesome performance, unmatched production efficiency and lower costs. But there is something special about talented and skilled people making a product of such high standard by hand. Great clip!

@WaltonPete 7 жыл бұрын

Fascinating and extremely manual manufacturing methods! It's a shame the image quality isn't a bit clearer as it would be great to see some of the detail at times. I appreciate that this is likely due to the original and not the digital conversion process. I imagine the people making those tubes would be astonished by our modern equivalents that we use to view their work and that we almost take for granted.

@azmath2059 5 жыл бұрын

Fantastic! Thanks for posting this technological snapshot of time.

@mmpiforall5913 4 жыл бұрын

Holy cow!!! I knew the CRT in my home Tek 564 storage scope (splitscreen, no less) was way complicated with several flood guns, etc, but now I fear for it's longevity too!! Tek CRTs for all their scopes are so good it was too easy to take them for granted. Knowing scopes are junked all the time, it is sad and scary, no LCD compares! (Tek user since 1977!)

@RingingResonance 3 жыл бұрын

Tek 564 storage scope gang unit! I need to recap mine at some point. Some are getting a bit leaky and the scope does not perform correctly once it's warm.

@mmpiforall5913 3 жыл бұрын

@@RingingResonance Check ripple voltages on your caps via DMM in ACV mode thru a in series cap (10uF 300V) to find scope caps that are truly below par! Replace the worst first, ie, 0.200V RMS is no big deal, but 20V AC RMS ripple voltage needs attention! Good luck!

@RingingResonance 3 жыл бұрын

@@mmpiforall5913 Thanks for the tip. The problem I'm having is the horizontal drifts constantly as the temperature changes and it warms up. I know it's going to drift some but this is excessive. It also fails to trigger after a while on the horizontal section, and the storage function doesn't work as well as it should anymore which is probably the storage tube itself going out. I keep it under a dust cover most of the time. One of these days I'll pull it out and tinker with it some more.

@mmpiforall5913 3 жыл бұрын

@@RingingResonance Still check the caps, power has to be clean. With Plug-ins in, ground Vertical inputs to see if that changes drift, swap different input amps to if you have them. Also swap your time base unit. Your horizontal drift...is the trace moving left & right or rising and falling?

@RingingResonance 3 жыл бұрын

@@mmpiforall5913 The scope is mostly functional. Just those few problems. I've gone through and tested all the tubes before and they all test pretty strong so I'm thinking caps and resistors next.

@directcurrent5751 Жыл бұрын

Vacuumable test rack tube was cool. I always wondered how electron gun designs were tested without a ton of glass blowing.

@w1qg 4 жыл бұрын

A nice example of Cannon's Law: "One Thing Leads to Another"

@killerorca1 6 жыл бұрын

great video!!!

@GBlunted Жыл бұрын

This shit is so cool! I wonder if you could replicate the double slit experiment with one of these cathode ray tubes??

@phonotical 5 жыл бұрын

Nobody should have been uploading at 240p in 2016...

@martinda7446 4 жыл бұрын

Ironic innit watching a vintage tech video about high precision CRTs and you say that. The original (most likely 16mm) film would happily have a resolution and colour fidelity better than your 4k TV. Unfortunately or fortunately depending on your POV this film was transferred to video tape at some point. At best domestic video had a resolution of 240 lines. Tell me why uploading a film with a native resolution of 240 lines requires wasted bandwidth?

@telocho 4 жыл бұрын

Martin D A 16mm film roughly represents 720 lines of resolution, the film grain is not more detailed than that. Only the original negative may push it to 1080, if made of a low ASA. But as it is a lot of indoor filming, it probably wasn't.

@martinda7446 4 жыл бұрын

@@telocho I dispute that.

@martinda7446 4 жыл бұрын

@@telocho It is accepted that a frame of 16mm film has an equivalent resolution of over 20Mpixels. That will vary with, as you suggest emulsion type and speed. Yet even at its worst it will comfortably exceed 4K TV. (1080 is 2.1Mpixel)...Surely you are not telling me 16mm has less resolution than 2Mpixel? Unless you have some proof otherwise?