How to Make a Normal Charger into a USB Charger

Dear Viewers,  In this video i will show you How to Make a Normal Charger into a USB Charger

Touch Sensor Circuit Using Transistor - Touch Sensor Circuit

Dear viewers, in this video i will show you how to build a touch sensor circuit. By
placing your fingers on the end jumper wires, you will light an LED in the circuit. Your
body essentially completes the circuit, so that current can flow through it.

Required:-

1.   
Transistor BC547...................... 02 pcs.

2.   
Resistor 220 ohm ......................01 pc.

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