ricksterphil Posted May 5, 2017 Share Posted May 5, 2017 Is there a cable which would allow me to run a 12v pedal off an 18v supply? Quote Link to comment Share on other sites More sharing options...
elephantgrey Posted May 6, 2017 Share Posted May 6, 2017 Don't know of any 18v to 12v adapter, but if you have an unissolated 9v available gigrig do a 9v to 12v adapter. http://www.thegigrig.com/supanova-c2x17796185 Quote Link to comment Share on other sites More sharing options...
Skybone Posted May 6, 2017 Share Posted May 6, 2017 I' have thought that it would be OK to use the 18v supply into the 12v pedal without any step down in voltage. Quote Link to comment Share on other sites More sharing options...
paul_5 Posted May 6, 2017 Share Posted May 6, 2017 (edited) Nope. You can supply a device with excess current but NOT excess voltage. You could make one easily enough using an LM7812 voltage regulator - they can be had for pence. Edited May 6, 2017 by paul_5 Quote Link to comment Share on other sites More sharing options...
DHA Posted May 6, 2017 Share Posted May 6, 2017 [quote name='Skybone' timestamp='1494059628' post='3292881'] I' have thought that it would be OK to use the 18v supply into the 12v pedal without any step down in voltage. [/quote] If its one of my pedals then 18V will blow it up, think that would be the case with most others. A voltage regulator circuit or DC-DC converter is the only way Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted May 7, 2017 Author Share Posted May 7, 2017 [quote name='paul_5' timestamp='1494064072' post='3292921'] Nope. You can supply a device with excess current but NOT excess voltage. You could make one easily enough using an LM7812 voltage regulator - they can be had for pence. [/quote] Hmm...with my soldering non-skils it would be anything but easy Quote Link to comment Share on other sites More sharing options...
ricksterphil Posted May 7, 2017 Author Share Posted May 7, 2017 Thanks for the advice all......I think I'll just use two psu's Quote Link to comment Share on other sites More sharing options...
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