Sunday, January 29, 2017

Circuit Schematic Remote Controlled Appliance Switch using NE555

Robometricschool. - This is one of the home circuit schematic application using some components like NE555, CD4017, and TSOP 1738. This circuit schematic named with Remote Controlled Appliance Switch using NE555.

In this time we will give you global description about Remote Controlled Appliance Switch using NE555 like the circuit schematic, component list and description.

Circuit Schematic

Component Part

  1. CD4017 IC
  2. NE555 IC
  3. TSOP 1738
  4. Capacitors
  5. Resistors
  6. Transistor
  7. Relay
  8. Zener Diode
  9. LEDs


This is one circuit schematic of Remote Controlled Appliance Switch using NE555. According Circuitstoday site describe that here is a versatile remote controlled appliance switch that can ON or OFF any appliance connected to it using a TV remote.

IR remote sensor IC TSOP 1738 is used for recieving the signal. Normally when no signal is falling on IC3 the output of it will be high.This makes Q1 OFF.When a signal of 38 KHz from the TV remote falls on the IC3 its output goes low.This makes Q1 conduct and a negative pulse is obtained at pin 2 of IC 1  NE 555.Due to this IC1 wired as a monostable multivibrator produces a 4 Sec  long high signal at its out put.This high out put is the clock for IC 2 which is wired as a Flipflop and of , its two outputs pin 3 goes low and pin 2 goes high.The high output at pin 2 is amplified to drive the relay .For the next signal  the outputs of IC2 toggles state. Result, we get a relay toggling on each press on the remote.Any appliance connected to this circuit can be switched ON or OFF.


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