Generally, we use a switch to ON or OFF any device but in this article we are going to get the basic information about such a circuit, through which you can simply ON or OFF a device by just simply touching and this doesn’t feel you bored.
All the details linked to this circuit is give below, Such as Schematic diagram, components list.
What is a Touch Sensor Circuit?
Touch sensors work similar to a switch. When they are subjected to touch, pressure or force they get activated and acts as a closed switch.
Only using 3 transistors you can create this circuit. Here am using a NPN Bipolar Transistor i.e. BC547.
What Components Needed to make this Circuit?
• NPN Transistor i.e. bc547
• 470 ohm Resistance
• Any color Led
• Connecting wires
• 9V power source
