View Full Version : How critical are these cap values (RCA T-100)?


Phil Nelson
09-29-2009, 02:11 PM
There are two paper caps left in my RCA T-100, C164 (.018) and C165 (.039), both rated 1000V.

Not having those exact values, the best I can do with parts on hand is to wire two 600V caps in series: .047 + .047 = .0235 for the .018, and .1 + .1 = .05 for the .039.

OK? Or should I cool my jets and wait for exact parts to arrive in the mail?

The HV supply is making 8KV, not 9KV as specified.

Phil

Zenith26kc20
09-29-2009, 03:12 PM
C165 looks critical as it is in the flyback/damper circuit. It may affect width. C164 looks like decoupling. I have to say that is a bizarre high voltage stage. They return the doorknob capacitor to the damper plate. I usually see them to ground. The more I think about it, C165 may affect high voltage. Keep us posted!

Phil Nelson
09-29-2009, 05:43 PM
OK, I won't fudge, then. I needed some other stuff from Mouser, anyway.

Phil

Phil Nelson
10-03-2009, 02:03 PM
After the new caps arrive, I need to thoroughly check out the horiz & h-v circuits. The 6BG6 output tube makes a nice blue dancing light show inside, something I haven't noticed in my CTC-11s. The width and horiz linearity adjustments are unresponsive, too. Perhaps not surprising if these caps are defective.

Phil