Category Archives: Control Electronics

General Infrared Remote Controlled Relay

Posted on January 24, 2012 by Rend

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 →

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LM139 One-Shot Multivibrator

Posted on December 9, 2011 by Rend

The circuit below is a one-shot multivibrator. One shot multivibrator is also known as monostable multivibrator, or timer. The main function of such circuit is producing a fixed width pulse. The width of this pulse is determined by the component … Continue reading →

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LM139 One Shot Multivibrator/Timer

Posted on October 24, 2011 by Rust

One shot multivibrator circuit is also known as monostable multivibrator or timer. The function of such circuit is simply produce a pulse strobe with a fixed width, regardless of the pulse width of the triggering input.  Below is the circuit’s … Continue reading →

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