Following circuit is a 220V touch switch from this website:
I'm wondering how it works because the IC take its working voltage from + and - of diode bridge but when the thyristor switching the Load, voltage through the diode bridge become about 0.9V only and this voltage is lower than standard voltage to running the IC
There are also another circuit by same concept and this time from this website:
So my question is:
1-Dose this method works?
2-If those circuits not correct so how motion switch with only 2 wires which available in the markets works?