All led tester circuit. Few people know this trick.
This diy homemade led tester is very useful for testing, led tv backlight , led bulb , led emergency light , led tube light , led tourch
and also 1.2 v led , 3 v led , 5 v led & 6 v led.
you can make this amazing tester at home using only 5 volt old mobile phone charger, 2 multimeter probes ( red & black ) and a 100 ohm 1/4 watt resistor.
cara membuat tester led.
cara buat tester led

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