Powerline Carrier-Current Remote Control or Intercom

Using 567 IC tone decoder/detector, we can build a remote control and or intercom. This circuit can be used to control a relay, or to carry an audio signal (intercom) through power-line wiring. Here is the schematic diagram of this remote control/intercom circuit:

Carrier Current Remote Control or Intercom circuit schematic diagramThe relay will be activated if you inject a 100kHz tone. This can be used to control a remote lighting. For example, for light jockey application, you can  build three similar circuits but with different frequency (100kHz, 150kHz, 200kHz) to control red, blue, and green stage lamps. The frequency is determined by R1 and C1 values, with frequency=1/(1.1 x C1 x R1) [Circuit’s schematic diagram source: Philips Semiconductors Application Notes]

This entry was posted in Control Electronics and tagged , , , . Bookmark the permalink.,
Possibly Related to "Powerline Carrier-Current Remote Control or Intercom" Circuits

  • Simple Door Intercom
    This intercom circuit suitable for accompanying  door bell. This circuit uses the speakers both as microphones and as loudspeaker. This intercom is made simple by using only a single amplifier IC LM390 to serve two-way communication. This circuit is based … Continue reading →...
  • TV Remote Control Jammer
    This is a TV Remote Control Jammer circuit.  Remote control use modulated light to combat eer infrared nvironment/background infrared noise. Your room heater, sunlight, incandescent lamp, and many other devices emit infrared. Without modulating the infrared carrier, other source of … Continue reading →...
  • Dual-Tone (Frequency) Decoder (Detector)
    The output of this circuit will be activated when a mix of two tone/frequency is detected on the input. The frequency f is determined by the values of R1 and C1, where f=1/(1.1 * R1 * C1). For security, using … Continue reading →...
  • General Infrared Remote Controlled Relay
    This relay circuit is controlled by almost any type of infrared remote controller. This circuit works on assumption that almost all remote controller use high frequency modulated infrared light. By filtering out un-modulated or low frequency modulated signal, this circuit … Continue reading →...
  • Simple IR Remote Tester
    Most cases of infra-red remote control failure can be detected by detecting the absence of the pulsed transmitted infra red light. It’s very rare that the remote control fail while it is still capable of transmitting the infrared pulse.  This … Continue reading →...

Comments are closed.