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New Circuit Projects

12V Battery Charger Circuits [using LM317, LM338, L200, Transistors]

Last Updated on January 18, 2025 by Swagatam 196 Comments

317CIRCUIT

In this article I will be discussing a list of simple 12V battery charger circuits which are very easy and cheap by its design yet extremely accurate with its output voltage and current specs. All the designs presented here are current controlled meaning their outputs will never go beyond a predetermined fixed current level. UPDATE: […]

Filed Under: Battery Charger Circuits Tagged With: 12V, Battery, Charger, Circuits, LM317, LM338

BJT 2N2222, 2N2222A Datasheet and Application Notes

Last Updated on December 30, 2020 by Swagatam 5 Comments

2n2222 1

This article explains the main specifications, pinouts and application related information regarding the transistor NPN BJT 2N2222, 2N2222A, and also its complimentary PNP pair 2N2907 BJT Introduction In one of my earlier posts I have explained regarding a few low signal type of transistors like BC547, BC557 etc. Here we are going to study the […]

Filed Under: Datasheets and Components Tagged With: 2N2222, 2N2222A, Application, BJT, Datasheet, Notes

How to Configure Resistors, Capacitors and Transistors in Electronic Circuits

Last Updated on July 19, 2020 by Swagatam 30 Comments

In this post we try to evaluate how to configure or connect electronic components such as resistors, capacitors withing electronic circuits through correct calculation Kindly read my previous post regarding what is voltage and current, in order to grasp the below explained basic electronic facts more effectively. What is a Resistor – It is an […]

Filed Under: Electronics Theory Tagged With: Capacitors, Circuits, Configure, Electronic, Resistors, Transistors

Difference Between Current and Voltage – What is Voltage, What is Current

Last Updated on August 6, 2018 by Swagatam 2 Comments

The following data explains the important aspects connected with the electrical parameters like voltage and current, the content also explains in simple words how to differentiate the two parameters. What is Current It is the number of electrons flowing at any instant through a conductor or across the positive and the negative of a conductor […]

Filed Under: Electronics Theory Tagged With: Between, Current, Difference, Voltage

How to Understand and Use white LEDs – Datasheet

Last Updated on January 1, 2020 by Swagatam 8 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 January 2, 2024 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: Mini Projects Tagged With: Build, Electronic, Igniter, Ignition, Pyro, System

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