Quote Originally Posted by Atom058
Hello All
Acetronics: If I gather your response correctly, it sounds like you are addressing frequency measurement. At this time, I am interested in voltage measurement. Please let me know if I misunderstood...

Again, Thanks!
Hi, Atom

YES, you are ...

the goal is to convert the mains dangerous voltage to a proportionnal frequency and THEN to use an opto coupler to transmit the info to a low voltage ( = safe ) part of the meter.

so, you count a freq which is proportionnal to your voltage. C.Q.F.D.

Alain