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Hoffman Amps Forum image Author Topic: powering new filter caps  (Read 3558 times)

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Offline Jomamma

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powering new filter caps
« on: July 21, 2014, 03:00:38 pm »
I know this is an old topic but:  What's the best way to power up new filter caps?

i have a variac- and sadly I've never used it.

I also have a box I made using Gerald Weber's method of powering up new caps with a 100watt light bulb.

your thoughts please, and thank you.

Jomamma

Offline sluckey

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Re: powering new filter caps
« Reply #1 on: July 21, 2014, 03:09:07 pm »
Quote
What's the best way to power up new filter caps?
I just install them, connect a volt meter, and flip the switch.
A schematic, layout, and hi-rez pics are very useful for troubleshooting your amp. Don't wait to be asked. JUST DO IT!

Offline Jomamma

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Re: powering new filter caps
« Reply #2 on: July 21, 2014, 03:18:37 pm »
Connect a volt meter to what?

Offline John

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Re: powering new filter caps
« Reply #3 on: July 21, 2014, 03:36:01 pm »
Connect the red lead to the positive side of the cap, black lead to neg. side. FWIW, I never worry about slow power up either. But it IS always a good idea to use the lamp limiter after doing anything inside the chassis the first time you flip the switch.
Tapping into the inner tube.

 


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