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previous: keith I just finished a tube distortion p... -- 1/27/2000 12:39 PM

Re: Homebrew tube dist. question

2/3/2000 10:29 PM
Brian	Re: Homebrew tube dist. question keith; The tube rectifier will just be a real PIA. The 12ax7 tube will pull about 7 mA under full load, which is not enough current for the rectifier to sag at all, making it moot to even put one in. Just as a side note, you don't need such a large PT anyway since you are pulling so little current. You could use say a 240V PC mount tranny, and zener it down a bit, since the zener wouldn't be that large. I wouldn't think excess voltage on the plates would cause the pedal to be dull. The tube may run with more headroom though. This is a wild guess, but maybe you have some HF oscillation? Brian

2/3/2000 10:29 PM

Brian

Re: Homebrew tube dist. question

keith;

The tube rectifier will just be a real PIA. The 12ax7 tube will pull about 7 mA under full load, which is not enough current for the rectifier to sag at all, making it moot to even put one in.

Just as a side note, you don't need such a large PT anyway since you are pulling so little current. You could use say a 240V PC mount tranny, and zener it down a bit, since the zener wouldn't be that large.

I wouldn't think excess voltage on the plates would cause the pedal to be dull. The tube may run with more headroom though.

This is a wild guess, but maybe you have some HF oscillation?

Brian