sk8 Posted July 7, 2010 Share Posted July 7, 2010 Whenever i plug it into the daisy chain my power supply switches off. Checked everything and thats fine. Can run it off a separate 9v supply and it works a treat but as soon as i daisy chain it with the rest of my pedals they all go off. Not had this before. is it something obvious i've missed? Checked polarities, etc. Quote Link to comment Share on other sites More sharing options...
DHA Posted July 8, 2010 Share Posted July 8, 2010 [quote name='sk8' post='888976' date='Jul 7 2010, 09:37 PM']Whenever i plug it into the daisy chain my power supply switches off. Checked everything and thats fine. Can run it off a separate 9v supply and it works a treat but as soon as i daisy chain it with the rest of my pedals they all go off. Not had this before. is it something obvious i've missed? Checked polarities, etc.[/quote] It uses PNP Ge tramsistors so requires a positive ground. So when you plug in a daisy chain power supply with negative ground it is shorted out. Needs a seperate power supply. Quote Link to comment Share on other sites More sharing options...
sk8 Posted July 8, 2010 Author Share Posted July 8, 2010 Thanks for the reply Power supply still needs to be centre -ve though, yeah? Bit confused with the positive ground bit Quote Link to comment Share on other sites More sharing options...
DHA Posted July 9, 2010 Share Posted July 9, 2010 [quote name='sk8' post='889678' date='Jul 8 2010, 04:53 PM']Thanks for the reply Power supply still needs to be centre -ve though, yeah? Bit confused with the positive ground bit[/quote] Yes, centre negative. The PNP transistors use a negative supply so the ground or 0V is more positive than the rail. Quote Link to comment Share on other sites More sharing options...
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