Hi, I have a simple breadboard setup with an inverter IC, LEDs, etc. I have a GND/Vcc wire, now I need something that I can send +4.5v through. mY professor mentioned I can use three 1.5 double A batteries in series, but how would I go about doing this? What tools do I need? This is for when I have to test the circuit when im at home and can't go to the lab. THx.