Touch Sensor LED
touch sensor LED is a simple led circuit. the led switches on when we touch the two terminals of the wire
Parts List
1 x 2N3904 transistor or any other npn transistor
1 x 470r resistor ( yellow violet brown)
1 x 330uf capacitor
1 x LED ( 3v ,any colors you like)
1 x 9V battery
1 x 470r resistor ( yellow violet brown)
1 x 330uf capacitor
1 x LED ( 3v ,any colors you like)
1 x 9V battery
Steps
complete the circuit according to the circuit diagram, it so simple , the total circuit is less than 3cm in scale
Conclusion
have fun with this circuit,