Hi again all I am working on bench testing my voltage reg circuit, its the same circuit that is on the bottom of the regulating a constant voltage tutorial. My prob here is actually kinda embarrassing since I am working on associates in computer engineering and a B.S. in EET. I was hooking up the circuit and did so with little effort. The circuits been failing and I checked everything individually except the MPS222A transistor I am using as the switching transistor. I checked the 5V reg by hooking it up to a 9V and checking the out for the 5V which it produced but I never used a transistor for switching, so I have no idea how to check it. Is it hooked up the same as the 7805A V-reg I am using ? In my prog. we rarely use single components other than Inductors , caps , and resistors or batteries. I think next year here I get into some more complex elect. with my Electronics I course and lab but I do know it continues on from Circuits II which was about DC/AC and all the math like Phase angles. Anyway I don't really get the switching trans so please help
