Category Archives: Control Electronics

One-Shot Multivibrator

Posted on August 2, 2011 by Rend

A one shot multivibrator generate a fixed width pulse at the output when the input is triggered. This fixed width output should be consistent, regardless the width of the input trigger. One example of one shot multivibrator circuit is shown … Continue reading →

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Bi-Stable Multivibrator (RS Flip-FLop) with Op-Amp

Posted on July 25, 2011 by Rend

This bi-stable circuit uses an op-amp, acts similar with RS flip-flop. Bi-stable circuit is a circuit with two stable states, low and remain low until set is triggered, or high and remain high until reset is triggered. Here is the … Continue reading →

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Direct Coupled On/Off Touch Switch

Posted on July 15, 2011 by Rust

The following touch switch circuit uses a CA3240 dual BiMOS op amp to sense small currents flowing between the contact points on a touch plate. Since this circuit is directly coupled with line voltage, a 1 M resistors in series … Continue reading →

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