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That is The Circuit Of a completely sensitive Clap transfer. It Switches ON/OFF A White LED Or electrical home equipment via Claps. The Circuit Can experience The Sound Of Claps From A Distance of one-three Meters. Condenser Mic choices Up Sound Vibrations C by means of The Clap.

Circuit Diagram

clap switch with cd

                       Clap on-off switch with ic 4017

Those Sounds Vibrations Are Given To the bottom point  Of Transistor BC 557 (A PNP Transistor). It Amplifies The Sound collected by means of The Mic. Transistor Collector factor is attached With IC factor 14 which is Clock point. Whilst Clock E Is obtained From Amplifier Transistor BC557.

IC 4017 Is A Decade Counter IC that is stressed As A Toggle switch. Its Outputs 1 and a couple of becomes high and low when The input Pin 14 receives Pulses.  Output4 (Pin4) is attached To The Reset Pin 15 in order that similarly Counting constrained. The excessive Output From IC 4017 Passes through Resistor To the base Of Switching Transistor BC557. When BC557 Conducts, pink LED (Indicator LED) activates.  A 6V 100 Ohms Relay is connected To The factors Marked (A And B), The Relay turned On And 220v AC bypass thru The Relay And Bulb Or some other electrical equipment Switched On. Inside the next Clap Output Pin, 2 will become Low And Relay And Indicator LED Switched Off.

Part listing:

  •  Prototyping Board (more or less 1″ through 1″) Or Bread Board.
  • 9v Connector
  • BC 547 Transistor (Npn)
  • BC 557 Transistor (Pnp)
  • IC 4017
  • 22k Resistor
  • 470 Ohm Resistor
  • 1k Resistor
  • 6v Relay
  • 9v Battery