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Re: hot tubes, I mean really hot

8/11/2005 12:22 AM
pete	Re: hot tubes, I mean really hot Thanks for your reply. I made a startling discovery and revealed some stupidity on my part. Big time. I have a grounding switch, and it’s a dpdt. Well To make a long story short, it wasn’t wired right, so my circuit never reached chassis ground. I fixed this, but still got the same problem. Small voltage at the Control Grid. I checked all capacitors, and they are in correct polarity. I noticed a discrepancy between the parts layout and schematic that I am using. One lists 100nF caps for the bias circuit, and the other lists 22nF. I will pick up the 100nF caps tomorrow and see if this changes anything, but I thought I would ask your opinion on the matter. Also, is it possible that I have ruined my capacitors, bias and otherwise, with the previous grounding problem? Thanks for your help. -Pete

8/11/2005 12:22 AM

pete

Re: hot tubes, I mean really hot

Thanks for your reply. I made a startling discovery and revealed some stupidity on my part. Big time. I have a grounding switch, and it’s a dpdt. Well To make a long story short, it wasn’t wired right, so my circuit never reached chassis ground. I fixed this, but still got the same problem. Small voltage at the Control Grid. I checked all capacitors, and they are in correct polarity. I noticed a discrepancy between the parts layout and schematic that I am using. One lists 100nF caps for the bias circuit, and the other lists 22nF. I will pick up the 100nF caps tomorrow and see if this changes anything, but I thought I would ask your opinion on the matter. Also, is it possible that I have ruined my capacitors, bias and otherwise, with the previous grounding problem?

Thanks for your help.

-Pete

Replies:

JC I believe it is uF (microFarads)...... -- 8/11/2005 9:53 AM