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Old 23rd July 2011, 07:46 PM   #1
semi932 is offline semi932  United States
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Default Protection circuit power source choices?

Running 3886 amp with nice low dc offsets.

I've been experimenting with other diy amp types so I ordered a protection relay kit off of you know where.

Nice kit for cheap money. Needs 12vac supply.
I'm going to use a wall wart for power.

Just wondering if there are any suggestions for other ways to get the 12v AC.?
It uses a 7812 regulator for dc so I guess I could make a 12v dc circuit and bypass the diode bridge and everything will turn on and off at the same time.

I may have answered my own questions.
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Old 24th July 2011, 03:40 AM   #2
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Yea, you pretty much nailed it. However, its not impossible to get 12vAC wall warts. Look in a Radioshack. Either way, it will be basically the same thing. You will just be using the rectifier in the wallwart and not the one on board.
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Old 24th July 2011, 04:34 AM   #3
semi932 is offline semi932  United States
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I've got a couple of 12v AC wall transformers so that's probably the simplest and maybe best way to go.

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Old 24th July 2011, 06:48 PM   #4
Minion is offline Minion  Canada
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Why not use a 12v Regulator and the +V of your chip amp power supply , or use a 24v Relay and use the +V of the chipamp PSU ??
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