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Description. W hen there is a fire breakout in the room the temperature increases.This ultra compact and low cost fire alarm senses fire b...

Description. Here is a simple fire alarm circuit based on a LDR and lamp pair for sensing the fire.The alarm works by sensing the smoke pro...

Description. Many fire alarm circuits are presented here,but this time a new circuit using a thermistor and a timer to do the trick. The ci...

Filter-circuit The output from any of the rectifier circuit is not purely dc but also has some ac components called ripples, along it. The ...

Shunt Capacitor Filter and types of it: This is the most simple form of the  filter circuit  and in this arrangement a high value capacitor...

A simple series inductor reduces both the peak   and effective values of the output current and output voltage. On the other hand a simple ...