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Explained

Accumulators Explained [Rechargeable Batteries]

Last Updated on May 17, 2026 by Swagatam 10 Comments

accumulator with electrolyte and electrodes

Unlike dry batteries, whose stored electrical energy can only be used once, accumulators have the immense advantage of reversibility, which translates into the possibility of a series of charge/discharge cycles. This means that they can undergo a series of charge/discharge cycles. They are found in applications that may require more power, such as starting the […]

Filed Under: Battery Charger Circuits Tagged With: Accumulators, Batteries, Explained, Rechargeable

Types of Batteries Explained [NiCd, NiMH, Lead Acid, Li-Ion]

Last Updated on May 17, 2026 by Swagatam Leave a Comment

NiCd battery compressed

In this post I have explained the main types of batteries that are widely used in today’s world for almost all important applications, ranging from cars, automobiles mobile phones, airplanes, industries, satellites to name a few. The Nickel Cadmium (NiCd) Battery Fundamentally, the NiCd battery adopts fast charging as opposed to slow charging and employs […]

Filed Under: Battery Charger Circuits Tagged With: Batteries, Explained, Lead, NiCd, NiMH, Types

Vehicle Immobilizer Circuit Explained

Last Updated on May 16, 2026 by Swagatam 9 Comments

CarImmobilzer

If you own a car and still haven’t incorporated any security system in it or perhaps your old security system is out of order, you can quickly opt for a cheap yet effective security option for your car or any vehicle by installing the proposed circuit. It will cost you not more than a dollar. […]

Filed Under: Automobile Electronics Tagged With: Explained, Immobilizer, Vehicle

Simplest Piezo Driver Circuit Explained

Last Updated on May 15, 2026 by Swagatam 47 Comments

piezodrivercircuit1

In the previous post I explained a piezo transducer element and learned how to use it with electronic circuits. In this article we will see how a piezo tranducer can be driven or operated using a simple circuit. As discussed earlier a piezo transducer basically requires a frequency to vibrate and reproduce the required sound. […]

Filed Under: Audio and Amplifier Projects Tagged With: Driver, Explained, Piezo, Simplest

6 Simple Class A Amplifier Circuits Explained

Last Updated on May 15, 2026 by Swagatam 37 Comments

amp

In this post I have explained 6 simple, cheap class A power amplifier circuits which can be used for any small scale audio amplifier application. By: Dhrubajyoti Biswas 1) Zero Negative Feedback Amplifier This following data will detail how to build an amplifier having zero negative feedback which implies building a zero component amplifier. The […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Circuits, Class, Explained, Simple

5 Simple Preamplifier Circuits Explained

Last Updated on May 15, 2026 by Swagatam 125 Comments

amplifier 2

As the name suggests a preamplifier circuit pre-amplifies a very small signal to some specified level that can be further amplified by an attached power amplifier circuit. It basically acts like a buffer stage between the input small signal source and a power amplifier. A preamplifier is used in applications where the input signal is […]

Filed Under: Audio and Amplifier Projects Tagged With: Circuits, Explained, Preamplifier, Simple

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