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Old 16th March 2010, 11:54 PM   #1
PauloPT is offline PauloPT  Portugal
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Default Help designing a psu pcb - fuses where?

Hi all,

I'm designing a power supply pcb (single layer) for a 150W class AB amplifier.
The rectifier is off board. I'm using 5 4700uf 63V caps per rail and a 100nF bypass cap.
I'd like to ask if the drawing is fine or is something I should change. I put the o fuses after the caps but I see in some psu's the fuses located before the rectifier. Where should they go for optimal protection?
The eagle drawing is attached.

Thanks!
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File Type: png psu.png (27.1 KB, 48 views)
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Old 17th March 2010, 12:18 AM   #2
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Fuses should go before the rectifier in case the rectifier goes.
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