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RE: This is a fixed bias, Class "A" amp?

Douglas, a lower voltage supply. But, may draw more current, right? At least compared to a (-40 to -60 VDC) bias supply --- for the same amount of wattage.

For -15 VDC, at 1/2-watt = 19.2mA. Build a 50mA-100mA unit?

At 50-100mA, how much does background noise in the bias supply need to be addressed? Versus a 15-20mA bias supply. Prolly need a choke and a full-wave bridge.


Thanks



Edits: 07/20/16

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