Anyone good with valve voltage regulators?
As an experiment I decided to remove a valve (12AT7) from the main meter to reduce current drawn and see if the regulator remained at 220v output.
Well it did'nt!
The output went up to 360v, with a 500V input voltage.
The main meter was still drawing some current as I had only removed the main bridge valve but left the other valve in place.
I found an articles on Series Double Triode Voltage Regulator which appear similar to the diagram attached above.
https://electronicspost.com/series-d...age-regulator/
This shows how the circuit works, and it should regulate the voltage.
The 12HB7 is an expensive valve and I don't want to replace it unless absolutely necessary.
Appreciate any input you guys may have.