Transistor Switching with the Arduino I know nothing about electrical engineering.. I have a TIP3055 NPN Transistor rated at 60V and 10Amps .. I have 12v 2amp current coming off of a "power supply" thats plugged into a regular american grounded wall outlet. The 12v is plugged into the transistor's collector and the ground is plugged into the emitter. But when I do an analogWrite off 255 from the 3rd pin on my arduino to the Base it doesnt respond (except for oddly messing up an LCD display I have hooked up to it). But when I connect 5v from the arduino to the collector and a resistor followed by an LED to ground to the emitter then it lights up... SOO how can I trouble shoot this? I'm basically trying to switch that wall current on and off to heat up some nicrome because 5v obviously wont do it but I dont want it continuously on.