DIY LED Tester a.k.a. LED TV Backlight Tester.

Parts list:
- 220v to 12v AC 300mA Transformer (2x) (for 110v countries change one of the transformer to 110v to 12v AC)
- Bridge Rectifier RB40 or equivalent.
- Resistor 20KOhm 2w
- Multimeter
- AC Cord, Aligator Clip cord, Shrinking tube insulator.

Warning: This experiment involves Main voltage (220v), which can be dangerous.
Always follow the safety procedures while working with high voltage.
We are not responsible for any damages or injuries.

[ShazlikSharif]

Best Vedio i have ever watch it to Led tester Circuit .. Just add 22uf /250v Capacitor at Output

[garyeyles]

Just want to let you know that this is the best YT video i have watched.