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Tutorial

Design your own Sine Wave Inverter Circuit from the Scratch [Tutorial]

Last Updated on November 30, 2025 by Swagatam 51 Comments

the right way to interface SPWM with inverter MOSFETs

In this article I have explained comprehensively regarding how to design a sine wave inverter without any form of coding or complex circuit designs. The included designs are simple yet extremely precise with their sine waveform structure. You might have often felt discouraged, thinking that making a sine wave inverter from the scratch can be […]

Filed Under: Inverter Circuits Tagged With: Design, Inverter, Scratch, Sine, Tutorial, Wave

Unijunction Transistor (UJT) – Comprehensive Tutorial

Last Updated on May 20, 2026 by Swagatam 1 Comment

unijunction transistor internal layout

A unijunction transistor is a 3 terminal semiconductor device which is unlike a BJT has only a single pn junction. It is basically designed to be used as a single-stage oscillator circuit for generating pulsed signals suitable for digital-circuit applications. UJT Relaxation Oscillator Circuit The unijunction transistor could be typically wired in the form of […]

Filed Under: Electronics Theory Tagged With: Comprehensive, Transistor, Tutorial, UJT, Unijunction

Learning Basic Arduino Programming – Tutorial for the Newcomers

Last Updated on May 20, 2026 by Swagatam Leave a Comment

arduino led

In this tutorial I have explained how to do basic Arduino programming through example codes and sample programs. This tutorial can be an extremely valuable course for all the newcomers who wish to grasp the basics through easy, understandable language. Introduction According to wikipedia a microcontroller is equivalent to a mini computer built inside a […]

Filed Under: Arduino Projects, Electronics Theory Tagged With: Arduino, Basic, Learning, Newcomers, Programming, Tutorial

How to Design a Flyback Converter – Comprehensive Tutorial

Last Updated on July 5, 2025 by Swagatam 54 Comments

1

A flyback configuration is the preferred topology in SMPS application designs mainly because it guarantees complete isolation of the output DC from the input mains AC. Other features include low manufacturing cost, simpler design and uncomplicated implementation. The low current DCM version of flyback converters which include output specification lower than 50 watt are more […]

Filed Under: SMPS and Converters Tagged With: Comprehensive, Converter, Design, Flyback, Tutorial

How Electret Microphones Work – Full Tutorial and Diagram

Last Updated on May 20, 2026 by Swagatam 16 Comments

electret

In this post I have explained how electret microphone devices work, through appropriate diagrams and formulas. What’s a Microphone A microphone is a device designed for transforming weak sound vibrations into tiny electrical pulses, which can be then amplified through a power amplifier over a loudspeaker for achieving a louder reproduction of the sound. The […]

Filed Under: Electronics Theory Tagged With: Electret, Full, Microphones, Tutorial, Work

Power Factor Correction (PFC) Circuit – Tutorial

Last Updated on December 10, 2025 by Swagatam 19 Comments

passive 2

In this post I have explained the different methods of configuring a power factor correction circuit or a PFC circuit in SMPS designs, and explains the best practice options for these topologies so that it complies with the modern PFC restriction guidelines. Designing efficient power supply circuits have never been easy, however in the course […]

Filed Under: Voltage Control and Protection Tagged With: Correction, Factor, PFC, Power, Tutorial

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