Or you could use opto couplers in the input. There are plenty with built in logic level converters Andy www.g4jnt.com http://www.g4jnt.com/137tx.pdf 2011/1/3 Stefan Schäfer <[email protected]
Dear group, Since a long time i wanted to publish the circuit of my "big" VLF PA. It is titled as a 600W PA since it has never handled more power so far, due to the power limit of my /p generator. In