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It was meant to be so simple :( Square wave inverter + low battery indicator.
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RIKRIK:
Okay this is a update from a post last month, had afew things going on, testing different circuit's, deleted alot of the old post as the circuits has been further improved on, well id like to think so..... so it was meant to be simple, i wanted to design a cheap , low cost square wave inverter for 220v led bulbs, that could be easy to understand while being easily repairable.

Kept finding the same circuit online using a astable multi vibrator, meant to be square wave, was a saw tooth, did some tests and after changing every component excluding the mosfet's and transistors. plus adding afew more  :palm: my simple circuit had became a little more complicated , but i reckon its simple enough, after one prototype on veroboard i can make up others without needing to look at a scem, then theirs the low battery indicator. in-which i tried to use the same components to keep the amount of different parts down.

Anys tell me what you think, and please remember it isnt meant to be high tech, or highly efficient, its what it is.. a square wave inverter. Also disclaimer, it is dangerous to work with high voltages.
RIKRIK:






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