Hey everyone, I'm building a theremin and working on the power circuit. I need to split my 12v input into 0,12, and -12v terminals. Below is what I'm currently using. 1 and 2 are respectively the 12v and ground from my 200mA power supply (just a wall wart). Is there a cheaper way to do this? Can it be an IC? I only want to use one 12v power supply.