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Newly Updated Circuit Projects:

How to Understand and Use white LEDs – Datasheet

Last Updated on June 30, 2026 by Swagatam 10 Comments

whiteled

If you are wondering how to correctly use white LEDs in circuits so that they can be illuminated safely without damaging, then this post might help you to evaluate the same. Introduction White LEDs are the future lighting solutions for our cities and homes. They will be easily replacing the traditional CFL and other flurescent […]

Filed Under: Datasheets and Components, Electronics Theory Tagged With: Datasheet, LEDs, Understand, white

How to Build a Pyro-ignition Circuit – Electronic Pyro Igniter system

Last Updated on September 20, 2025 by Swagatam 7 Comments

pyroignition 2

The following conversation was made by Mr.Tom and me regarding the circuit idea of a pyro-iginition system. I was asked to design the particular circuit idea by Mr.Tom in Fiverr.com. Technical Specifications The discussion explains the details of his requirement and how it was almost fulfilled by me Hi Swagatam, I was wondering if you […]

Filed Under: Temperature Controllers Tagged With: Build, Electronic, Igniter, Ignition, Pyro, System

Transistor Relay Driver Circuit with Formula and Calculations

Last Updated on May 20, 2026 by Swagatam 131 Comments

Relaydriver

In this article we will comprehensively study a transistor relay driver circuit and learn how to design its configuration by calculating the parameters through formulas. Importance of Relay Relays are one of the most important components in electronic circuits. Especially in circuits where high power transfer or mains AC load switching is involved, relays play […]

Filed Under: Electronics Theory Tagged With: Calculations, Driver, Formula, Relay, Transistor

How to Save Electricity at Home – General Tips

Last Updated on August 6, 2018 by Swagatam 2 Comments

Saving electricity will not only save you some bucks but also help in a social cause. A little awareness and alertness is all that is required for the purpose. A little contemplation will make you consider regarding the amount of electricity we waste everyday due to sheer negligence or ignorance. The article will perfectly explain […]

Filed Under: Home Electrical Circuits Tagged With: Electricity, General, Home, Save, Tips

How to Manufacture Automobile Electronic Parts and Earn a Handsome Income

Last Updated on May 16, 2026 by Swagatam 4 Comments

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To set up an auto electrical manufacturing unit, it’s important to have a thorough knowledge regarding the various technicalities associated with the field. The article makes a comprehensive approach and explains all the issues related to the subject. Introduction We begin with the basic raw materials and man power required for the intended installations and […]

Filed Under: Automobile Electronics Tagged With: Automobile, Earn, Electronic, Handsome, Manufacture, Parts

How to Make Any Light a Strobe Light Using Just Two Transistors

Last Updated on June 1, 2026 by Swagatam 168 Comments

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If you feel strobe lights very interesting but are disappointed by the fact that these wonderful light effects can be produced only through complex xenon tube then probably you are quite mistaken. It is very much possible to make any light a strobe light if you are equipped with a proper driving circuit capable of […]

Filed Under: Lamps and Lights Tagged With: Just, Light, Strobe, Transistors

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