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Old 05-07-2014, 07:08 AM
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NoPegs NoPegs is offline
The glass is -3dB.
 
Join Date: Mar 2014
Location: Amish Country PA.
Posts: 376
Quote:
Originally Posted by powerking View Post
I think the IV/1V are the same tube, just which character you interpret it as "I" or "1". Later versions of the tester went with an 80 type then the 6X5 rectifier from what I can tell. See the attached files for the parts list and schematics. Good luck with your restoration as well.

Tom (PK)
Excellent! The parts list is exactly what I needed. I'm presuming that 600v poly caps and 450v electrolytics are enough. Although, if the leakage test goes up to nearly 500v I could be wrong on the electrolytics, so this is me seeking your advice before I give mouser my order. C6 is right across the rectifier and C7 sees about 1/3 of the same voltage through the divider, too...

R4 is the main current limiter, for shorted or terribly leaky caps, correct? Any thoughts on putting a 100ma fuse in line with the rectifier to protect the HV secondary winding in case of terrible things?

Thanks for clarifying my thoughts on the rectifier. Hopefully I won't need to source a replacement, but if I do now I know where I can get an actual I-V instead of adding a 600ma filament transformer and changing the socket or rebasing a 6X5 to fit.

Last edited by NoPegs; 05-07-2014 at 07:13 AM.
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