Optically Isolated Phase Controlling Circuit

[dhanush]

Detecting the zerocrossing correctly (without delay) is not a simple metter. Here we have got to thrust Fairchild engineers.

When you have got a working circuit, with the proper zerocrossing pulse detected by your oscilloscope, then tray to remove some components you judge useless and see the result on your scope. If pattern doesn't change you were right otherwise you will have to resolder the component in its original position.

This is the best way to learn.

Al

I am not trusting EFY Magazine schemetic that why I am using Fairchild schemetic. EFY Mag is Indian edition. I am developing this project is for business purpose, so I need quality product. Good reply and thanks.