How to make LED TV back light tester in tamil | Automatic reducing and increasing LED tester 0-300V

How to make LED TV back light tester in tamil | Automatic reducing and increasing LED tester 0-300V
APPARATUS REQUIRED:
1. 1amp Bridge Rectifier
2. 105pf 400v Polyester Capacitor
3. 10mfd 450v Capacitor
4. 1mega ohm 1w Resister
5. 100 ohm 1w Resister
6. 220k 1w Resister
7. 10k 1w Resister( 2 )
8. 1N4007 Diode
9. 1 Square mm Wire.
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