Lo-Fi_Massahkah Posted February 25, 2005 Report Share Posted February 25, 2005 I'd like to power my MBSid with a single PSU and since I don't own the original C64 PSU, I'm wondering how to get things done.It says on ucapps that I can use a 15V 500ma transformer for both the SID- and CORE module. But how do I hook it up? The transformer into the SID? And then? I'm really a newbie, here. So, please be gentle!Cheers,Mikael Quote Link to comment Share on other sites More sharing options...
illogik Posted February 25, 2005 Report Share Posted February 25, 2005 I think the easiest way to do it is to get a C64PSU anyway.. ;D there not so hard to find i guess (try ebay, flea markets etc.)if this is no option:If you don't want to use the C64 PSU, you can power both modules with the same transformer or wallwart for both modules. 14-15V AC (!!!before!!! the regulation unit) are required for a good and noiseless sound.so get a wallwart with 14V or 15V AC, power both of the modules with it but make sure you include all rectifiers/regulators on both the modules (core bridgerectifier; X1(B40C800) regulator; IC2 7805 (makes a clean 5V)) (SID rectifier+regulator for 12V)ps the 12V is for when you use the SID6501; when you use a SID8580 you can change 12V for 9V (the regulators)when i'm writing this i get more and more doubts, could someone verify or correct this??cheers, marcel Quote Link to comment Share on other sites More sharing options...
Lo-Fi_Massahkah Posted February 25, 2005 Author Report Share Posted February 25, 2005 Thank you Illogik!I'll try with the 15V PSU the way you suggested it. I hope nothing blows... ;) Quote Link to comment Share on other sites More sharing options...
doc Posted February 25, 2005 Report Share Posted February 25, 2005 ps the 15V is for when you use the SID6501; when you use a SID8580 you can change 15V for 12V You're almost right:It's 9V for 8580 (you'll need a 7809 regulator)andit's 12V for the 6581 (you'll need a 7812 regulator)Look into the schematic of the SID Module, then it becomes clearer.greetsDoc Quote Link to comment Share on other sites More sharing options...
Martin_Haverland Posted March 1, 2005 Report Share Posted March 1, 2005 @doci think you are right if you mean the voltage of the regulators, but the psu should deliver more because the regulators cause a voltage drop, i think.so i think illogik is right with the values...maybe someone to explain better?Martin Quote Link to comment Share on other sites More sharing options...
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