The post explains 3 simple yet accurate infrared intruder alarm circuits using an infrared transmitter and an infrared receiver module. The transmitter and the receiver photo diodes used in the […]
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Simple Diode Circuits Explained
In this post we will learn how to use rectifier diodes for building some practical and useful electronic circuits. A diode is the most basic semiconductor electronic component, which 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 […]
12 V to 19 V Converter Circuit
The following post explains how to build a simple 12 V to 19 V boost converter circuit which can used to charge a 19 V battery from a 12 V […]
Tuned Radio Frequency (TRF) Receiver Circuits
A tuned radio frequency receiver (or TRF receiver) is a form of radio receiver which is made using a number of tuned radio frequency (RF) amplifier stages accompanied by a […]
7 Accurate Square Wave Oscillator Circuits
In this article we comprehensively discuss 7 accurate RC square wave oscillator circuits with 50% duty cycle, by appropriately configuring the gates from various CMOS ICs such as 4001, 4011, […]