Re: Friedman BE-OD Pedal
Posted: 05 Aug 2017, 23:45
If you look at my last posted schematic, you will see all bias points are active (connected to the bias buffer). There is not necessarily anything wrong with how Friedman/Bugg did it. Lots of bias supplies are just resistive dividers with capacitive filtering to create a stable reference voltage.
The reason to avoid doing resistive divider R/C filtered bias supplies is that assymetrical clipping of some circuits will integrate with a long time constant of their high output impedance and cause slow bias shifts. A single clean stage is less of a problem and symmetrical clipping is less of a problem. That being said, bias shifts could be the feature. Who knows in this zany world of stompboxes. If it sounds good, it is good
The reason to avoid doing resistive divider R/C filtered bias supplies is that assymetrical clipping of some circuits will integrate with a long time constant of their high output impedance and cause slow bias shifts. A single clean stage is less of a problem and symmetrical clipping is less of a problem. That being said, bias shifts could be the feature. Who knows in this zany world of stompboxes. If it sounds good, it is good