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Inductor Working and Designing, with Formulas

Last Updated on May 20, 2026 by Swagatam 11 Comments

inductor image

In this post I have explained all the basics of inductors, its working principle, and how to design inductors with the help of formulas and calculations. Inductors are vastly used from mobile, laptop chargers to high-end communication equipment like mobile base stations to the satellites orbiting the earth. Let us take a deep dive into […]

Filed Under: Electronics Theory Tagged With: Designing, Formulas, Inductor, Working

Diodes: Working, How to Use, Applications

Last Updated on May 20, 2026 by Swagatam 2 Comments

Hydraulic analogy of diode

It’s John Ambrose Fleming (1849-1945), a British engineer, who invented the first diode in 1904, in the form of an electron tube. Later, with the development of semiconductor technology, the diode became a dipole consisting of two substrates: one, rich in free electrons, and of type N, the other deficient in electrons, and of type […]

Filed Under: Electronics Theory Tagged With: Applications, Diodes, Working

DPDT Relay Working, Pinouts, Testing Explained

Last Updated on May 20, 2026 by Swagatam 23 Comments

In this post we are going to understand about how this DPDT relay actually works, how we identify its pinouts, and how we can use it in our projects. We shall go step by step so that you can feel confident with every small thing about it. Introduction We know that a DPDT relay means […]

Filed Under: Electronics Theory Tagged With: DPDT, Explained, Pinouts, Relay, Testing, Working

IC 555 Pin Description and Working [with Formulas]

Last Updated on May 18, 2026 by Swagatam 21 Comments

723px NE555 Bloc Diagram.svg

In this post I have explained the how IC 555 works, its basic pinout working details and how to configure the IC in its standard or popular astable, bistable, and monostable circuit modes. The post also details the various formulas for calculating the IC 555 parameters. Introduction Our hobby world would be less interesting without […]

Filed Under: Datasheets and Components Tagged With: 555, Description, Formulas, Working

PIR Sensor Datasheet, Pinout Specifications, Working

Last Updated on May 18, 2026 by Swagatam 54 Comments

PIR internal layout

In this post I am going to explain the datasheet of PIR or Pyroelectric Infrared Radial Sensor HC-SR501. We will understand for what purpose PIR sensor is used? Its basic trigger operations, pin connection details, technical specifications and finally we will be looking at some real life applications. We will begin by understanding the actual […]

Filed Under: Datasheets and Components Tagged With: Datasheet, Pinout, PIR, Sensor, Specifications, Working

IC 4026 Datasheet, Pinout Working, Application

Last Updated on May 18, 2026 by Swagatam 1 Comment

IC 4026 is comprised of a 5-stage Johnson decade counter and an output decoder that transforms the Johnson code into a 7-segment decoded output to drive a single 7 segment numerical display. These devices offer significant advantages in display applications that prioritize low power dissipation and/or low package count. Both sides of IC 4026 have […]

Filed Under: Datasheets and Components Tagged With: 4026, Application, Datasheet, Pinout, Working

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