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In Reply to: RE: VR tube as bleeder in choke input supply? posted by Tre' on March 24, 2017 at 22:14:19
Do you really have to have a cap across it? If you use the necessary dropping resistor to the VR tube then the following C shouldn't be connected directly to the VR tube at all. If I'm thinking straight. The tube isn't regulating anything. It just burns current and looks nice.
Follow Ups:
It also generates noise. The snubber in parallel is necessary and the 0.1 μF. max. mentioned previously can, sometimes, put you into relaxation oscillator territory. :> ((
Just put 1 Kohm of resistance (appropriate power handling capability) per H. of I/P choke inductance in parallel with the 1st capacitor. Remember, the approx. critical current (in mA.) is given by V/L. Larger inductance = smaller critical current.
Eli D.
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