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Explained

Simplest Combination Lock Circuit Explained

Last Updated on January 2, 2024 by Swagatam 14 Comments

12V solenoid lock

A electronic combination lock is a device which is designed to activate an electrical solenoid locking system whenever the correct combination of numbers are entered into an attached keypad. To build this type of electronic combination lock, normally an electronic circuit with a keypad is used. In the design I have explained in this article, […]

Filed Under: Security and Alarm Tagged With: Combination, Explained, Lock, Simplest

Types of Power Amplifier Classes Explained in Simple Words

Last Updated on May 15, 2026 by Swagatam 6 Comments

class A amplifier

In this post I am going to explain power amplifiers and their classification according to their output electrical characters and application. We will be exploring amplifier classes: A, B, AB, C, D, E, F, G, H, I, S and T briefly and yes, that’s a lot of amplifier types that are available in today’s electrical […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Classes, Explained, Power, Simple, Types

Wheatstone Bridge Circuits Explained with Calculations

Last Updated on June 8, 2026 by Swagatam 11 Comments

Table3

A Wheatstone Bridge circuit is commonly used to measure resistance, inductance, capacitance, and impedance. These are made up of four parts or arms that are joined in series in a diamond like bridge configuration. These four arms carry the individual components such as resistor, inductor or capacitor connected across the fur junctions. An alternating current (AC) or […]

Filed Under: Meters and Testers Tagged With: Bridge, Calculations, Circuits, Explained, Wheatstone

Simple Triac Triggering Circuits Explained

Last Updated on May 20, 2026 by Swagatam 129 Comments

triac as switch in AC mains

In this post I have explained the fundamental methods of triggering a triac, and also discuss the right way to connect the terminals of a triac. Triacs are solid-state bidirectional thyristors that can switch across both the AC half cycles on a 120-volt or 240-volt Ac power system. A triac could be activated (switched on and […]

Filed Under: Electronics Theory Tagged With: Circuits, Explained, Simple, Triac, Triggering

CMOS Astable, Bistable, Monostable Circuits Explained

Last Updated on September 22, 2026 by Swagatam 19 Comments

4011 pinout truth table compressed

In this article I have explained how to use the low-cost CD4001 and CD4011 quad 2-input gate CMOS integrated circuits in bistable, astable, and monostable multivibrator applications through forty different manners. We also learn how to enhance and modify these configurations to produce highly improved outputs from these multivibrators. When CMOS logic gates are configured […]

Filed Under: Oscillator Circuits Tagged With: Astable, Bistable, Circuits, CMOS, Explained, Monostable

Types of Solar Panels, Solar Inverters Explained

Last Updated on June 12, 2021 by Swagatam 4 Comments

solar roof shingles compressed

In this article I have explained the main types of solar panels available in the market, and also discuss the different types solar inverters which are specifically compatible with these solar panels. Further in the article we will also discuss how the efficiency of a solar panel may be affected due to to bad weather, […]

Filed Under: Solar Controller Circuits Tagged With: Explained, Inverters, Panels, Solar, Types

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