Hi there,
I recently found some time to continue work on my PP1C version - which unfortunately still exists on paper only
...
As I would like to fit a tube-based PSU, excessive playing with Duncanamps' PSUD led to the following, showing only the supply for one channel each:
The "standard" solid state power supply circuit:
Output: approx. 409V DC @ 110mA
Hum: 17mV p-p
A GZ34-based supply w. choke input:
Output: approx. 413V DC @110mA
Hum: 12mV p-p
Will this work or do I forget something important?
Second question: Planning to buy only one (custom-wound, expensive) power transformer with twice the current capability and drive the supplies for both channels from the same transformer winding - bad idea?
A first version with EZ81 simulated fine in PSUD, but cross-checking with the datasheet showed my plans to be far out of SOA...
Thanks for your ideas and comments,
Andreas
I recently found some time to continue work on my PP1C version - which unfortunately still exists on paper only

As I would like to fit a tube-based PSU, excessive playing with Duncanamps' PSUD led to the following, showing only the supply for one channel each:
The "standard" solid state power supply circuit:

Output: approx. 409V DC @ 110mA
Hum: 17mV p-p
A GZ34-based supply w. choke input:

Output: approx. 413V DC @110mA
Hum: 12mV p-p
Will this work or do I forget something important?
Second question: Planning to buy only one (custom-wound, expensive) power transformer with twice the current capability and drive the supplies for both channels from the same transformer winding - bad idea?
A first version with EZ81 simulated fine in PSUD, but cross-checking with the datasheet showed my plans to be far out of SOA...
Thanks for your ideas and comments,
Andreas