Lamp pulser circuit

Posted on Feb 5, 2014

Here is a simple circuit that can be used to pulse an LED or a low power filament lamp. The effect is such that the LED lights up from OFF state gradually and then dims gradually. Such a circuit is very useful in decoration purposes. The circuit is nothing but a triangular wave generator based on dual opamp IC LM 358. The two opamps inside the IC i

Lamp pulser circuit
Click here to download the full size of the above Circuit.

s used for the purpose. The transistor Q1 BC337 is used to drive the load (LED or lamp). The resistor R4 and capacitor C1 are the timing components of the circuit. Here the values of R4 & C1 are so chosen that the timing is around 5S.

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