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Hi dear
please connect your pwm first to a Low pass filter and then put it to your opto that has Zero Cross Detector(moc3043)
I hope be helpful
Best Wishes
Green Tree
OK!:grin: now as i understood , this way is good :
you must use two channel and then as Brian said shift your voltage up (so you haven't negative voltage) then with resistance division your voltage become 0 to 5 volt...and now you can put it to pic.
i think it's best way.:wink:
and you can shift...
thank you so much dear Brian...
i test it before and see i can use two formula ...so we can measure 8 voltage but with one formula(i did it)
so what is your suggestion about ac voltmeter?
Best Wishes
Green Tree
Hi dear LvW
and thanks:wink:
but still isn't clear for me! where is negative feedback on this circuit?
what's your explanation if it be split?
Best Wishes
- - - Updated - - -
Hi dear brian
as i could understand with pic we cann't measure negative and positive voltage together , yes?
if we use two channel , can we measure them ?
Best Regards
Green Tree
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