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Unijunction Transistor (UJT) – Comprehensive Tutorial

Last Updated on June 1, 2021 by Swagatam 1 Comment

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 […]

Filed Under: Electronic Components, Electronic Devices and Circuit Theory, Electronics Tutorial

Zener Diode Circuits, Characteristics, Calculations

Last Updated on October 15, 2022 by Swagatam 19 Comments

Zener diodes – named after its inventor Dr. Carl Zener are fundamentally used in electronic circuits for generating precise voltage references. These are devices that are able to create a […]



Filed Under: Electronic Components, Electronics Tutorial

3 Terminal Fixed Voltage Regulators – Working and Application Circuits

Last Updated on May 2, 2020 by Swagatam 13 Comments

The popular 3 terminal fixed regulators available today are in the form of IC 7805, IC 7809, IC 7812, IC 7815, and IC 7824, which correspond to fixed voltage outputs […]

Filed Under: Electronic Components, Mini Projects, Power Supply Circuits

Optocouplers – Working, Characteristics, Interfacing, Application Circuits

Last Updated on March 24, 2023 by Swagatam 29 Comments

OPTOCOUPLERS OR OPTOISOLATORS are devices that enable efficient transmission of DC signal and other data across two circuit stages, and also simultaneously maintain an excellent level of electrical isolation between […]

Filed Under: Electronic Components, Electronic Devices and Circuit Theory, Electronics Tutorial

Schottky Diodes – Working, Characteristics, Application

Last Updated on September 10, 2022 by Swagatam 6 Comments

Schottky barrier diodes are semiconductor diodes designed with minimal forward voltage and fast switching speeds which may be as low as 10 ns. These are manufactured in current ranges of […]

Filed Under: Electronic Components, Electronic Devices and Circuit Theory

Comparator Circuits using IC 741, IC 311, IC 339

Last Updated on January 31, 2020 by Swagatam 13 Comments

The basic function of a comparator circuit to compare two voltage levels at its input pins and produce an output to show which input voltage has higher potential than the […]

Filed Under: 741 IC Circuits, Electronic Components, Electronic Devices and Circuit Theory



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