Welcome! I am an amateur designer of electronic circuits. I have designed a few amplifiers and other useful circuits and would like to share them with everyone who is interested. Feel free to use any of the circuits on this page and please use them for personal gain. The designs posted have not all been tested but sooner or later I will run extensive tests. Build these circuits at your own expense. If they don't work, or you blow up your house with one, it is not my fault. I do not guarantee that these circuits work. They all work in theory and simulation, but who can trust simulations? Enjoy.