ampage
Tube Amps / Music Electronics
For current discussions, please visit Music Electronics Forum. The sunn still shines online!

ampage archive

Vintage threads from the first ten years

Search for:  Mode:  
previous: Tommy Dale Ok, so since it's drawn like a resi... -- 9/13/2004 5:46 AM View Thread

Re: Strange pot in the Hybrid-A schem.

9/13/2004 9:38 PM
Daver
Re: Strange pot in the Hybrid-A schem.
When it's drawn with an arrow through it, it's wired as a rheostat. Looking at the back of the pot, the left lug would go to ground, the center and right lugs would be wired together and that connects to the cap from the tone stack. You could just use the center lug to the cap, but since that's the wiper, if the pot gets dirty you may lose your connection there.  
 
Typically the bias tap will be about 50 VAC. After rectification it will be around -60VDC.  
 
Daver

 
Replies:
Tommy Dale What cap are we talking about..the ... -- 9/14/2004 6:09 AM