Guest analouge Posted May 10, 2004 Report Share Posted May 10, 2004 Is it possible to use a standard ATX PSU for a quad SID system? It delivers 12 and 5 volts if I remember right... So if I use 8580 SIDs it should not be a big problem or...?thanks. Quote Link to comment Share on other sites More sharing options...
Dr_Nick Posted May 11, 2004 Report Share Posted May 11, 2004 Hi!In theory it's possible to use a computer psu.But the 8580 needs 9 volts to run. One could easily use a voltage regulator to get 9 volts out of 12.Another big problem is that computer psu's are switching power supplies. That introduces a lot of "switching noise" into an analog audio circuit, which is something you definitely don't want.I don't really know enough about analog circuit design to tell you whether there's a way to reduce the noise. I'd prefer using the old C64 psu.Regards,Dr. Nick Quote Link to comment Share on other sites More sharing options...
pay_c Posted May 11, 2004 Report Share Posted May 11, 2004 There are ways, but you would have to put a lot of effort in there (including complete shielding of the PSU and a lot of big caps...) .Switching supplies are definetely not the kind of supplies you want for any analoge stuff. Especially when the analoge stuff should make sounds not including much of noise... Quote Link to comment Share on other sites More sharing options...
Guest analouge Posted May 11, 2004 Report Share Posted May 11, 2004 Thanks!I do NOT want to try using a PC PSU then!I'm not a GOD in electronics design. In fact I don't know much about it for now - I am totally dependent on schematics - for now... So I won't try making a noise reduction thing either... Too much effort - too little to gain... But just one question... What is a switching power-supply? I didn't even know there was such differences i PSUs...?Thanks! Quote Link to comment Share on other sites More sharing options...
smashtv Posted May 11, 2004 Report Share Posted May 11, 2004 See:http://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=parts_q;action=display;num=1054271159;start=20#20andhttp://www.midibox.org/cgi-bin/yabb/YaBB.cgi?board=parts_q;action=display;num=1045138790;start=10#10For info about the different types of power supplies.Have fun!SmashTV Quote Link to comment Share on other sites More sharing options...
pilo Posted May 13, 2004 Report Share Posted May 13, 2004 is it a real problem using a switching PSU in analog stuff?? I use one to test my adc/adat project... at the scope the voltage seems very good... Quote Link to comment Share on other sites More sharing options...
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