i am checking your schematic, it is better keep isolation between mains and circuit or no need to use opto-coupler for mains detect, why using two optocoupler for mains checking, and what the pin at 40 (PA0 ) doing ?(mains sense? better make isolate from mains)
i will look in more detail
Hi Tahmid,
Have you decided to witheld your support on my inverter project? you seems not to make any futher comment on it.
regards.
mains sensing
it is a working design
---------- Post added at 21:22 ---------- Previous post was at 21:22 ----------
only care about the mains part before resistors
for square wave it is not possible with .1uf capacitor
---------- Post added at 21:31 ---------- Previous post was at 21:30 ----------
if you increase the capacitor to more value ( your design uses 10uf ) it is possible
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