A touch switch is a type of switch that only has to be touched by an object to operate. It is used in many lamps and wall switches that have a metal exterior as well as on public computer terminals. A touchscreen includes an array of touch switches on a display. A touch switch is the simplest kind of tactile sensor.

Touch Switch Circuit Diagram Using IC 555

touch switch circuit diagram using 555 timer
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Parts List For Touch Switch Circuit Diagram Using IC 555

  • IC 555 – 1 Pc
  • Transistor 2N2222 – 1 Pc
  • Capacitor 470Uf/16V –  1 Pc
  • Capacitor 47Uf/16V –  1 Pc
  • Resistor 10K – 3 Pc
  • Resistor 1K – 1 pc
  • LED – 1 Pc