A field strength meter is an electronic device which is used for detecting and measuring the RF radiation generated from any RF transmitter circuit. As we all know that transmitter […]
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Intruder Alarm Circuit using Photodiodes
The post explains a simple infrared intruder alarm circuit using an IR transmitter and an IR receiver module. The transmitter and the receiver photo diodes used in the two modules […]
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, […]
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 […]
Simple Crystal Tester Circuit
In this post we discuss how to build a simple crystal tester circuit using ordinary parts like transistors, resistors, diodes and capacitors. What is a Crystal A crystal can be […]
10 Easy Op amp Oscillator Circuits Explained
In an op amp oscillator circuit, an op amp is configured with a resistor-capacitor feedback loop or a inductor-capacitor feedback loop, which triggers the op amp to go into an […]