Nano Power Inverter - Roll Your Own Style

Author	Message
wiseguy Guru Joined: 21/06/2018 Location: Australia Posts: 1307	Posted: 11:09am 14 Jul 2019       The FETs are sandwiched between the PCB (face down) and an aluminium bar that has an adhesive insulator to the FET faces. The bar is threaded for all the FETs and a single screw through the PCB for each FET rigidly retains it all. The Bar is held by two separate screws to each of the 4 heatsinks - I had plenty to use up! The screws for the high side FETs are all insulated from the positive plane with a small TO220 mounting bush also with a little square pcb spreader washer. The lower side screws are not insulated and connect the Batt- to the heatsink. Here are the zipped up pics for better clarity. My viewer has every format except PNG - like me its old.... 2019-07-14_210604_PWR_Pics.zip I dont have my allen keys handy but I will dismantle it & take a few more pictures and post them soon. Edited by wiseguy 2019-07-15 If at first you dont succeed, I suggest you avoid sky diving.... Cheers Mike