Yes, you just connect positive to the ground. One thing to note, bias supply's are usually just a couple of RC filters but with the resistors on the bias supply's ground (which will be - Vcc) and the caps positive go to the main ground.
If you use one of those small brdge rectifiers, and a couple of 100 - 470u caps with 680r - 1k ish resistors that should filter the bias supply well and leave it ripple free. Roll off is found by the usual 1/(2 x pi x f x R or C )
It's also a good idea to make the bias adjustable using a pot, but make sure you use a resistor on one leg so the bias cannot go to 0v, it has to be foolproof.
There is some good info on bias supply's for valve/tube amps at Valve Wizard and Elliott Sound Products site.
Andy.
If you use one of those small brdge rectifiers, and a couple of 100 - 470u caps with 680r - 1k ish resistors that should filter the bias supply well and leave it ripple free. Roll off is found by the usual 1/(2 x pi x f x R or C )
It's also a good idea to make the bias adjustable using a pot, but make sure you use a resistor on one leg so the bias cannot go to 0v, it has to be foolproof.
There is some good info on bias supply's for valve/tube amps at Valve Wizard and Elliott Sound Products site.
Andy.
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