How to make automatic light on off circuit use BD140 transistor.AC DC Invater bulb
In this video you will learn how to make automatic light on off circuit usc bd140 Tangistor
Components required:
(1) BD 140 Transistor,
(2) IN4007 Diode,
(3) 100 - 400 ohm Resistor,
(4) 4v Battery,
(5) 4v led plate,
(6)5v Mobile Charger
Digram Link:-
[ Ссылка ]
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