Dear friends I have an arduino mega board and I used an op-amp as a zero crossing detector, the signal generated by the op-amp is then injected into a digital pin to read it, but unfortunately the signal has dropped to a small value. What I want is to read the signal from the op-amp then after som…

firing angle control for an SCR

PieterP September 26, 2017, 8:12am 2

Please post your schematic.
A picture of a hand-drawn circuit diagram is fine.

Pieter