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previous: stokes Someone once suggested placing it b... -- 12/28/1999 4:19 AM

Re: placement of a standby switch

12/28/1999 7:57 PM
Mark Buckingham	Re: placement of a standby switch I've used the c.t. style standby switch on the amps I've built, and it works well. So far, I've used cathode bias, so I haven't run into the problem Bruce describes. The only problem, I've had, is that when you switch off the standby, the amp isn't instantly silent. It can take a couple of seconds to totally drain the filter caps. Also, the reverse is a problem, because when you switch the standby on, it takes a second or two for the B+ to build again. Actually, the above might mitigate the problem Bruce sees. If it takes x seconds for the B+ to build, then the fact that it takes that long for the bias to build may not be a problem...

12/28/1999 7:57 PM

Mark Buckingham

Re: placement of a standby switch

I've used the c.t. style standby switch on the amps I've built, and it works well. So far, I've used cathode bias, so I haven't run into the problem Bruce describes.

The only problem, I've had, is that when you switch off the standby, the amp isn't instantly silent. It can take a couple of seconds to totally drain the filter caps. Also, the reverse is a problem, because when you switch the standby on, it takes a second or two for the B+ to build again.

Actually, the above might mitigate the problem Bruce sees. If it takes x seconds for the B+ to build, then the fact that it takes that long for the bias to build may not be a problem...

Replies:

peter I have built a couple of am... -- 12/29/1999 3:42 PM
Bruce The problem stems from the large va... -- 12/29/1999 3:47 PM