AC MAINS DETECTOR CIRCUIT
In this article I share a mains detector circuit. This circuit is very useful in our daily life. This circuit is easily detected where the mains wire is hidden in the wall. If you are an electrician then this circuit is perfect for you.
Circuit Description-
This circuit works depending on the principle of static electricity. Actually, this circuit detects mains wire to finding mains hum. The base of the Q3 is connected in a metal wire. When its detect mains the LED will glow.
PART LIST –
1) R1 – 220R
2) R2 – 100k
3) R3 – 1M
4) LED – 1p
5) Q1,Q2,Q3 – BC547
6) 6v Battery
7) 2mm wire
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