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previous: Ricky is a better place for a standby swi... -- 12/27/1999 10:09 PM

Re: placement of a standby switch

1/1/2000 3:31 PM
R.G.	Re: placement of a standby switch Why don't you use a switch to open the cathodes of the output tubes? B+ stays on, bias stays on, and one side of the switch stays at ground potential. It's even easier if you use a power MOSFET like the IRF820 or better to switch the cathodes. The MOSFET is designed to switch DC loads in the B+ range and can be controlled by a small switch to ground on the gate. The MOSFET saturates to under 1 ohm, and adds no change or coloration to the tone of the amp.

1/1/2000 3:31 PM

R.G.

Re: placement of a standby switch

Why don't you use a switch to open the cathodes of the output tubes? B+ stays on, bias stays on, and one side of the switch stays at ground potential.

It's even easier if you use a power MOSFET like the IRF820 or better to switch the cathodes. The MOSFET is designed to switch DC loads in the B+ range and can be controlled by a small switch to ground on the gate.

The MOSFET saturates to under 1 ohm, and adds no change or coloration to the tone of the amp.

Replies:

Benjamin Fargen R.G.That would work... -- 1/1/2000 7:47 PM