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Old 11th January 2005, 08:21 AM   #1
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Join Date: Sep 2003
Location: Melbourne, Australia
Exclamation Power supply recycling

I pulled apart a graphic eq unit last nite - useless as far as I'm concerned, except for its case and its power supply.

I know I can use the case ... but the powersupply?

It's not grounded (strike one) ...

It has all the usual bits ... transformer, fuse, switch, cap on the AC input, then the PCB with the resistors, diodes, caps ... now here's the weird bit - 5 wires going off as power supply!

NOt labelled in any way that makes sense to me.

Perhaps someone can offer comments, advice suggetions on whether or not it's useble ... how to use it, how to determine if I can use it etc.

See pic
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Old 11th January 2005, 08:31 AM   #2
Jennice is offline Jennice  Denmark
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Location: Planet Earth
The PCB isn't something I'd spend too much time on. I can't see any high power devices I'd spend time rescuing.
As for the transformer, try to:
1) Determine AC input and output side.
2) find the output wire pairs (ohm-meter is useful)
With AC - and a lot of caution - applied, measurer output voltage of the secondaries.

then you can determine if you want to use it.

I get paid to break stuff. My g/f gets paid to play with children. Life is good.
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Old 11th January 2005, 08:51 AM   #3
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not so much looking at the parts, rather the power supply as a whole .. which I don't have to design ... what do I do with those 5 outputs? :O
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Old 11th January 2005, 08:57 AM   #4
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My guess is you have 12V, and then an additional voltage, maybe for a vacuum fluorescent display. It looks like the white/brown pair is only half wave rectified, so it's probably not sound related, and likely low current.

Do wizards use spell checkers?
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