need help with using one power supply to power multi guitar pedal?
i have two DIY guitar pedal , they work normal in a chain and each of them use they own power supply( 9v AC-DC adapter).Now i want to use one power supply to power both of them.So , i wire them like the picture bellow, and i get the 60hz noise.
Can you please tell me how to get rid of that noise.
Thanks in advance !
sorry for my bad English.