Please any have a circuit using HT9200 and a opto isolated???
I wanna remove a transistor in the up first image and substitute for a CNY-17... to interface with mcu.
The circuit in the mcu generate square wave... I need a sine wave in to the opto CNY-17. And I think about the RC but not works!!!
I have problem too with the "pop-corns"!!!
sorry for bad english.
Thanks