The following post discusses a simple ion detector circuit which can be used for detecting positive and negative ions generated by high voltage circuits. This device can be also used […]
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Whistle Activated Switch Circuit
In this post we will learn how to build a simple whistle sound operated relay circuit, which can be used for switching ON/OFF a 220 V load through whistle sounds. […]
How to Make Logic Gates using Transistors
In this post we will learn how to build NOT, AND, NAND, OR, and NOR logic gates using discrete transistors. The main advantage of using transistor logic gates is that […]
What is a Gunn Diode? How it Works?
Gunn diodes are semiconductor devices which are used to generate low-power microwave signals in a simple and low-cost manner. These have been in use for more than 60 years now. […]
Effects of Electromagnetic Fields (EMF) on Your Health
Our population has grown extremely worried regarding electromagnetic pollution over the past few years. There is real issue about how ElectroMagnetic Fields (EMF) affect people’s health. Currently, the main reason […]
Ultrasonic Burglar Alarm Circuit
An ultrasonic burglar alarm circuit is an electronic device which transmits ultrasonic waves to detect the movement of an intruding person. The ultrasonic waves hit the intruder and the reflected […]