Ripley Posted November 4, 2006 Report Share 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 Quote Link to comment Share on other sites More sharing options...
Wilba Posted November 4, 2006 Report Share 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. Quote Link to comment Share on other sites More sharing options...
stryd_one Posted November 4, 2006 Report Share 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... Quote Link to comment Share on other sites More sharing options...
Ripley Posted November 4, 2006 Author Report Share 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 Quote Link to comment Share on other sites More sharing options...
Ripley Posted November 4, 2006 Author Report Share Posted November 4, 2006 yep that solved it ;D Thanks Wilba!... Quote Link to comment Share on other sites More sharing options...
Therezin Posted November 5, 2006 Report Share 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... Quote Link to comment Share on other sites More sharing options...
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