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Otimized PSU blown fuse problem


Ripley

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Hi Guys

Am trying to build the optimized psu at the mo using the online pdf and the http://www.danielprice.org.uk/synth-diy/sid_2.htm link

for info.

I am trying to test the circuit as i build it to make sure voltages are ok!

I used the power connector from a c64 and seem to have correct voltages on the board 5.16v dc and 10.2v ac.

However when i put the bridge rectifier in the circuit the fuse in my power supply blows?

I am using a W04M rectifier as the one specified isnt available from my local shop.

anyone any ideas why i might be having this problem?

4 fuses blown so far in testing  :(

thanks... R

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The pin arrangement on the bridge rectifier on that page is different to the ones I use, which has the "~" pins diagonally opposite each other, the "-" and "+" pins in the other corners. Perhaps yours is the same, and you're connecting it wrong, which will short circuit between the AC inputs!

Use a multimeter to test the actual diodes in the bridge rectifier.

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