Help!

  • Thread starter Thread starter bigwillz24
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bigwillz24

bigwillz24

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I'm building this power supply...

http://www.braudio.com/products.cfm?view=Product&ItemCode=CANPSU312PCB

I've got everything right except for one thing the voltage on the last rail is supposed to be +15 -15VDC. I'm getting +15 -31 to -34VDC. When I try adjusting the trim pot down to 15VDC I end up frying R4.

The link to the schematic is on that page...


I've replaced the voltage regulator once. The diodes D3, D4, D7, D8 once, the trimpot twice and the resistor R4 about 4 or 5 times.

I've double and triple checked to make sure the diodes are in the right way.

Anyone with any info? I'm about to lose all my hair over this thing.
 
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