Ripley Posted November 4, 2006 Report Posted November 4, 2006 Hi GuysAm 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 linkfor 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
Wilba Posted November 4, 2006 Report Posted November 4, 2006 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.
stryd_one Posted November 4, 2006 Report Posted November 4, 2006 That rectifier should be well over spec, maybe test it with your multimeter to make sure it's not a dud? Edit: Also what Wilba said :)Is this just the rectifier by itself, or is there other circuitry after that? If so, check for shorts...
Ripley Posted November 4, 2006 Author Report Posted November 4, 2006 I think Wilba may have it :-) The rectifier i have has the - and + diagonally so looks like i was creating a short circuit! I'll try again.many thanksR
Ripley Posted November 4, 2006 Author Report Posted November 4, 2006 yep that solved it ;D Thanks Wilba!...
Therezin Posted November 5, 2006 Report Posted November 5, 2006 Wow, I didn't realise that so many people actually looked at my page - I better get on with buildingthe rest of the damn thing! I'll also update it with the info. about this problem, 'cause that's liable to catch a few people out if they're not expecting it...
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