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 A TV to CRO adaptor with valves.
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 Return to top of page · Post #: 1 · Written at 11:45:52 AM on 21 April 2017.
Fred Lever's Gravatar
 Location: Toongabbie, NSW
 Member since 19 November 2015
 Member #: 1828
 Postcount: 184

Hi All, while I am grounded and not allowed to play with heavy moving objects after a heart attack I decided to revive my knowledge of using valves in TV's as this just involves sitting down in the workshop and waving a soldering iron about!

I looked at the notes on the first 5" TV I made in 1975 and sketched out what I would need to show some pictures on the 3" CRO I made last year. See the special projects section for that one.

The following PDF is an account of how far I got before realising the 3" tube is not much chop and what I really need to do is revive the 5" tube and make a whole new 1975 5" just like the RHTV design. I now have hundreds of NOS ex TV valves and the smart signal tuner/IF strip bit is done with a K-Mart set top box coupled up to a chassis with enough valves to drive the required signals into the CRO.
I'll send a PDF through to Brad so you can all see what I did.

If you have an old CRO with a valve CRT and want to learn a bit about basic TV principles why not give it go?


Cheers, Fred.

TV - CRO Adaptor


 
 Return to top of page · Post #: 2 · Written at 7:09:26 PM on 21 April 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 3919

Take it easy Fred. We look forward to plenty more of your articles.


 
 Return to top of page · Post #: 3 · Written at 7:30:58 PM on 21 April 2017.
Brad's avatar
 Administrator
 Location: Greenwich, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 4322

G'day Fred,

Good to see you are on the mend. You must be doing well if you are up to a project like this one. Smile


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
Brad.

A valve a day keeps the transistor away...

 
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