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Explained

Simple Colpitts Oscillator Circuits Explained

Last Updated on September 22, 2026 by Swagatam 27 Comments

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In this post I have explained how LC oscillator circuits functions and we will be constructing one of the popular LC based oscillator – Colpitts oscillator. What are Oscillators Electronic oscillators are used in most of our daily used electronic gadgets ranging from digital clock to high end core i7 processor. Oscillators are heart of […]

Filed Under: Oscillator Circuits Tagged With: Circuits, Colpitts, Explained, Oscillator, Simple

Raspberry Pi Explained

Last Updated on May 14, 2026 by Swagatam 2 Comments

In this article I have explained about Raspberry Pi single board computer, their specifications, how to use them in a project, we are also going to do a small comparison between Arduino and Raspberry Pi, so that we can choose which of them are best for your projects. What is Raspberry Pi? Raspberry Pi is […]

Filed Under: Arduino Projects Tagged With: Explained, Raspberry

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

Force Sensing Resistor Circuit Explained

Last Updated on January 8, 2024 by Swagatam 5 Comments

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In this article we are going to see, what force sensing resistor is, their construction, specification and finally how to interface it with Arduino microcontroller. We will also study a couple of comparator circuits based on 741 and LM311 ICs, for operating a relay using force sensitive resistor. What is Force Sensing Resistor A force […]

Filed Under: Sensors and Detectors Tagged With: Explained, Force, Resistor, Sensing

How to Select MOV – Explained with a Practical Design

Last Updated on May 20, 2026 by Swagatam 116 Comments

MOV

MOVs or metal oxide varistors are devices designed for controlling mains switch ON surges in electrical and electronic circuits. Selecting an MOV for a particular electronic circuit might require some consideration and calculation, I have explained the procedures here. What are MOVs Metal oxide varistors or simply varistors are non-linear surge suppressor devices which are […]

Filed Under: Electronics Theory Tagged With: Design, Explained, MOV, Practical, Select

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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