Yep, the preamp PS. I saw a design somewhere that used feedback to the triode grid to regulate. I thought it would be neat to do a different type of tube regualtion, and I think I will only need two.:yes:
That's it I think! What is the heater bias terminal all about??:scratch2:
What is the heater bias terminal all about?
Where can one buy some of these tubes without paying top dollar?
Yep, the preamp PS. I saw a design somewhere that used feedback to the triode grid to regulate. I thought it would be neat to do a different type of tube regualtion, and I think I will only need two.:yes:
Bob91343 said:For 250 Volts that will be 12 or 13 Volts drift.
Bob91343 said:The heater bias allows you to keep the heater-cathode voltage within ratings.
A more stable solution would be to use a VR tube. Their coefficient is very small and they are available in several voltages from 75 to 150 Volts.
On an audio circuit is that an issue? The supply would be stable once it reaches the final voltage, yes?
But where in the circuit does it connect?