Other Parts Discussed in Thread: ISO1211
Dear members,
As I'm working on VAC detection circuit, I found this chip. it can help me perfectly make the circuit. I wanted to know if there is possibility to design the exact value, I mean for example I have input VAC of 400v and below 200VAC it should give me 0 (digital).
for detecting presence of all three lines (as my system is three-phasic) I know that I need to implement 2 of this chip. and then maybe by connecting the outputs to an and gate,k checking the existance of each line. On the other side I want it gives me a zero when the voltage is behind 200vac in each line. I tried to make the circuit using optocopulers but still I'm not able to make it. any idea?