The IC 555 astable multivibrator is a configuration where the IC 555 output continuously switches between an ON state and an OFF state at a given frequency, determined by its […]
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Telephone Transmitter Circuit
The post explains how a landline telephone can be rigged up wirelessly with a small transmitter circuit, enabling easy tapping of the telephone, by transmitting the conversations to a distant […]
Vehicle Parking Lot Counter Circuit
In this post we are going to learn how to construct a vehicle counter circuit that can count the number of vehicles entered in a parking lot at office building, […]
Electronic Acupuncture Circuit [Bio-Stimulation Circuit]
In this article we discuss how to build an electronic acupuncture circuit, also called bio-stimulation circuit., and use it for a possible treatment of many common body ailments, without any […]
Ultrasonic Motion Detector Circuit
This ultrasonic motion detector circuit project picks up movement of any object including human beings from a distance of 4 to 7 meters away. As soon as the motion is […]
Battery Deep Discharge Protection Circuit
In this post we learn how to build a battery deep discharge protection circuit which can be used for protecting any type of battery from over discharge through a connected […]