HelloCan anybody tell me.You have to use a 9 volt supply.Is it okey to use a 13 volt/900 mA, supply instead, or is that to big for the regulators.best regardsFinnDenmark

I have run it at 13.8V with no problems, at all.Glenn.

Hello GlennThanks for your quick reply, and thanks for your answer.RegardsFinn

12V PC power supply works great here. Just remember to put a small heatsink on the regulator to avoid heat, it helps.Tuomas

>Hello>Can anybody tell me.>You have to use a 9 volt supply.>>Is it okey to use a 13 volt/900 mA, supply instead, or is that>to big for the regulators.If i remember well, the 7805 can handle up to 25V, but to be shure have a look at the specs.Anyway it can handle 13/15v for sure.