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Electronics Theory

Sine wave PWM (SPWM) Circuit using Opamp

Last Updated on September 7, 2021 by Swagatam 136 Comments

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SPWM refers to Sine Wave Pulse Width Modulation which is a pulse width arrangement in which the pulses are narrower at the start, which gradually get broader at the middle, and then narrower again of the end of the arrangement. This set of pulses when implemented in an inductive application like inverter enables the output […]

Filed Under: Electronics Theory

How Thyristors (SCR) Work – Tutorial

Last Updated on August 18, 2019 by Swagatam 8 Comments

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Basically an SCR ( Silicon Controlled Rectifier) which is also known by the name Thyristor works quite like a transistor. What  SCR Stands for The device gets its name (SCR) due to its multi layered semiconductor internal structure which refers to the “silicon” word in the beginning of its name. The second part of the […]

Filed Under: Electronics Theory

How Mosquito Traps Work

Last Updated on August 6, 2018 by Swagatam Leave a Comment

795px Mosquito Tasmania crop

Mosquito and other forms of fly trap mechanisms work by making use of luring techniques for attracting the insects, which involve carbon dioxide gas, body odor simulators and ultraviolet lights. These traps become very useful in areas which may be highly infested with mosquitoes, however due to its high costs such traps are not very […]

Filed Under: Electronics Theory

What’s PWM, How to Measure it

Last Updated on March 13, 2019 by Swagatam 14 Comments

DC 2

PWM stands for pulse width modulation which signifies the variable nature of the pulse widths that may be generated from a particular source such as a discrete IC, MCU, or a transistorized circuit. What’s PWM In simple terms a PWM process is nothing but switching ON and OFF a supply voltage at a particular rate […]

Filed Under: Electronics Theory

How to Use Resistors with LED, Zener and Transistor

Last Updated on October 6, 2019 by Swagatam 56 Comments

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In this post I have explained how to use resistors while designing an electronic circuits using LEDs, zener diodes, or transistors. This article can be very useful for the new hobbyists who normally get confused with the resistor values to be used for a specific component and for the desired application. What is a Resistor […]

Filed Under: Electronics Theory

How to Connect Diodes in Parallel

Last Updated on January 23, 2024 by Swagatam 8 Comments

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In this post we systematically discuss how to connect diodes in parallel for getting upgrading the overall current specifications of the assembly. This requires special circuit arrangement to ensure uniform current distribution between the devices. Whenever an inductor based load is involved in a DC circuit, incorporating a back EMF protection diode or a freewheeling […]

Filed Under: Electronics Theory

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