ampage Tube Amps / Music Electronics	For current discussions, please visit Music Electronics Forum.

ampage archive

Vintage threads from the first ten years

previous: Reid Kneeland I recently got a great deal on a va... -- 8/19/1998 6:19 PM

Re: Adding meters to a variac

8/19/1998 10:30 PM
GVB	Re: Adding meters to a variac I have a home built varic using an 3A autotransformer. It works great for most applications, but some things do want to draw slightly more than 3A. So I used a 3A fuse, a volt and ammeter. For applications larger than 3A, I can still check for problems by slowly bringing the unit up to see if it is operating normally. I also have a bypass switch, which makes it easy to apply full power to the unit without having to unplug anything. On other thing you might want to add is a power switch. If your bringing something up and it surges all of a sudden (it does happen), it's a lot quicker to hit a switch under the dial, rather than the amp switch. Hope this helps. GVB

8/19/1998 10:30 PM

GVB

Re: Adding meters to a variac

I have a home built varic using an 3A autotransformer. It works great for most applications, but some things do want to draw slightly more than 3A. So I used a 3A fuse, a volt and ammeter. For applications larger than 3A, I can still check for problems by slowly bringing the unit up to see if it is operating normally. I also have a bypass switch, which makes it easy to apply full power to the unit without having to unplug anything.

On other thing you might want to add is a power switch. If your bringing something up and it surges all of a sudden (it does happen), it's a lot quicker to hit a switch under the dial, rather than the amp switch.

Hope this helps.

GVB

Replies:

Gary Coplin How far do you want to go....I do p... -- 8/23/1998 8:11 AM