[Milsurplus] BC-348 Power Supply/Biasing

[Hubert Miller]

My comment:
There is a third method of bias: contact bias, which is used in such first audio tubes as 6AV6,
which gives up to about -2 volts, with no signal rectification and no cathode bias resistor.

Also, if you use any reasonable analog meter with a rating of 20,000 ohm/volt or better, on say,
its 25 volt range, you are not going to seriously affect the voltage reading across ~250 ohms
resistance.

-Hue Miller
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