On 05/29/2011 08:23 AM, JIMMIE wrote:
I want to replace the vr 0A3 tube used in the bias circuit of a 6146B
amp with a 75V zener string. Can I just directly replace the tube with
the diodes or will I need to make other modifications to the circuit?

Jimmie
Forgot one thing, with zeners the CATHODE of the diode is wired to the
tube ANODE and visa versa (zeners work in the REVERSE mode!).