Photocoupler

For maintenance, it is much more convenient to have data drawings. Otherwise, it is a very troublesome thing. I spent a lot of time, sorted out the schematic diagram of some electric vehicle charger circuits, and sorted out the PCB map. The picture quality is high. Friends reference, this rare maintenance information, very practical, I hope to be useful to everyone, and some in the finishing, there is time to publish, if necessary, you can contact me, the obligation to help you. Add a pulse charger schematic (how to repair the battery with pulsed charging? Look at the experience to talk about the effect)