Infrared (IR) circuit diagrams

Infrared Switch

This is a single channel (on / off) universal switch that may be used with any Infra Red remote control using 36-38kHz. (This is a very common remote handset frequency). In place of IR1 a TSOP1738 receiver may be used.

Infra Red Extender

This circuit was sent to me by Mr Guy Bocquillon from France. Now retired, and in his seventies, Mr Bocquillon keeps himself active in his hobby and his results and support are most appreciated.

IR Remote Control Extender Mark 5

The latest addition to my collection of Infra Red (IR) Repeater circuits. The Mark 5 is a much improved version of the Mark 1 circuit and has increased range and sensitivity. It is also immune to the effects ofambient light, daylight and other forms of interference. In addition it works with IR modulation freuencies in the range 30 to 120kHz making the Mk5 circuit the best choice for compatibility with remote controls.

IR Remote Control Extender Mark 2

This is an improved IR remote control extender circuit. It has high noise immunity, is resistant to ambient and reflected light and has an increased range from remote control to the extender circuit of about 7 meters. It should work with any domestic apparatus that use 36-38kHz for the IR carrier frequency.

IR Remote Control Extender Mark 4

An Infra Red wired Repeater circuit to control appliances from a remote location

IR Remote-Control Checker

Suitable for any Infra-red emitting device, 3V battery supply

IR Remote Control Modulation Detector

A circuit to extract and measure the modulated carrier of an Infra Red remote control. Note that the circuit does not physically separate control pulses from modulation, but amplifies the completereceived signal allowing the waveform to be displayed ideally on an oscilloscope or a frequency counter.

Infra Red Link

A basic Infra Red Link for audio communication for distances upto 3 metres.

Infra Red Remote Control Tester

A simple IR receiver to facilitate in testing of Infra Red Remote Control handsets.

IR Remote Control Extender Mark 3

This Mark3 version of the Infra Red extender is a special version designed to control appliances that use high frequency modulated IR remote controls.