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Newly Updated Circuit Projects:

Sine wave PWM (SPWM) Circuit using Opamp

Last Updated on May 20, 2026 by Swagatam 140 Comments

pwm2Bgeneration

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 Tagged With: Opamp, PWM, Sine, SPWM, Wave

How Thyristors (SCR) Work – Tutorial

Last Updated on May 20, 2026 by Swagatam 8 Comments

scr 2

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 Tagged With: SCR, Thyristors, Tutorial, Work

What’s PWM, How to Measure it

Last Updated on May 20, 2026 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 Tagged With: Measure, PWM

Opamp Hysteresis – Calculations and Design Considerations

Last Updated on May 20, 2026 by Swagatam 8 Comments

nohyst

In most automatic battery charger circuits in this blog you might have seen an opamp with a hysteresis feature included for some crucial function. In the following post I have explained the significance and design techniques for the hysteresis function in opamp circuits. To learn exactly what’s a hysteresis you can refer to this article […]

Filed Under: Electronics Theory Tagged With: Calculations, Considerations, Design, Hysteresis, Opamp

Understanding Capacitor Codes and Markings

Last Updated on May 20, 2026 by Swagatam 63 Comments

1

In this article I will comprehensively explain everything regarding how to read and understand capacitor codes and markings through various diagrams and charts. The information can be used for identifying and selecting capacitors correctly for a given circuit application. By Surbhi Prakash Capacitor Codes and associated Markings The various parameters of the capacitors such as […]

Filed Under: Electronics Theory Tagged With: Capacitor, Codes, Markings, Understanding

BJT Emitter-Follower – Working, Application Circuits

Last Updated on May 20, 2026 by Swagatam 12 Comments

In this post I have explained how to use a transistor emitter follower configuration in practical electronic circuits, we study this through a few different example application circuits. An emitter follower is one of the standard transistor configurations which is also referred to as common collector transistor configuration. Let’s try to first understand what’s an […]

Filed Under: Electronics Theory Tagged With: Application, BJT, Circuits, Emitter, Follower, Working

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