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Charger

5 Best 6V 4Ah Automatic Battery Charger Circuits Using Relay and MOSFET

Last Updated on May 17, 2026 by Swagatam 337 Comments

The following 5 versions of 6 volt 4 AH battery charger circuits has been designed by me and posted here in response to the request from Mr. Raja, I have explained the whole conversation. Technical Specifications “Dear sir, please post a circuit to charge 6 volt 3.5 ah lead acid battery from 12 volt battery. […]

Filed Under: Battery Charger Circuits Tagged With: 4Ah, Automatic, Battery, Best, Charger, Circuits

Sec Exciter Powered HV Capacitor Charger Circuit

Last Updated on May 17, 2026 by Swagatam 1 Comment

NEW SEC EXCITOR POWERD HV CAP CHARGER WITH HV DC OUTPUT 001

My friend Steven has updated a few more of his findings related to his sec exciter experiment, I have explained more what Mr. Steven has to say. NEW SEC EXCITER POWERED HV CAP CHARGER WITH HV DC OUTPUT Here’s the newest circuit originally it was a 3 piece circuit i found on YouTube so i modified it and upgraded […]

Filed Under: Battery Charger Circuits Tagged With: Capacitor, Charger, Exciter, HV, Powered

Battery Cut Off Charger Circuit Using a Single Relay

Last Updated on May 17, 2026 by Swagatam 31 Comments

simplestbatterychargercircuit

Amazed to hear this! Yep that’s actually possible, you would need only one relay and a handful of diodes to make a simplest one relay automatic battery charger circuit. How it Works The idea struck me while trying to design the easiest possible battery charger circuit for one my clients. The concept is simple; just […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Relay, Single

Make this Solar Powered Fence Charger Circuit

Last Updated on March 15, 2020 by Swagatam 149 Comments

enhanced two wheeler ignition circuit

A Fence charger or energizer is an equipment which is used for charging(electrifying) a fence or a boundary in order to protect the inside premise from human or animal interventions. Since these boundaries are mostly of large fields and parks, are normally away from the main cities, and powering them through some renewable option becomes […]

Filed Under: Security and Alarm Tagged With: Charger, Fence, Powered, Solar

9 Simple Solar Battery Charger Circuits

Last Updated on March 31, 2026 by Swagatam 542 Comments

garden2Blight

Simple solar charger circuits are small devices which allow you to charge a battery quickly and cheaply, through solar panels. A simple solar charger circuit must have 3 basic features built-in: In this post I will comprehensively explain nine best yet simple solar battery charger circuits using the IC LM338, transistors, MOSFET, buck converter, etc […]

Filed Under: Solar Controller Circuits Tagged With: Battery, Charger, Circuits, Simple, Solar

6 Useful DC Cell phone Charger Circuits Explained

Last Updated on May 17, 2026 by Swagatam 301 Comments

DCcellphonechargercircuit

A DC cell phone or mobile phone charger is a device which charges a cellphone from an available DC supply source. The device converts the unregulated DC source into a constant current and constant voltage output which becomes safe for any mobile phone charging. In this article I have explained how to build DC to […]

Filed Under: Battery Charger Circuits Tagged With: Cell, Charger, Circuits, DC, Phone, Useful

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