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Archives for 2012

9 Simple Solar Battery Charger Circuits

Last Updated on March 31, 2026 by Swagatam 538 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

7 Simple Continuity Tester Circuits Explained

Last Updated on March 24, 2026 by Swagatam 43 Comments

simplecontinuitytestercircuit

If you are looking for a simple circuit to test continuity of wires and long conductors, the explained 7 easy to build continuity circuits are the ones which you can try and might fulfill your requirement. What is a Continuity Tester A continuity tester is a device which is used for identifying the correct continuity […]

Filed Under: Meters and Testers Tagged With: Circuits, Continuity, Explained, Simple, Tester

Make This 1KVA (1000 watts) Pure Sine Wave Inverter Circuit

Last Updated on March 8, 2026 by Swagatam 294 Comments

A relatively simple 1000 watt pure sine wave inverter circuit is explained here using a signal amplifier and  a power transformer. As can be seen in the first diagram below, the configuration is a simple mosfet based designed for amplifying current at +/-60 volts such that the connected transformer corresponds to generate the required 1kva […]

Filed Under: Inverter Circuits Tagged With: 1000, 1KVA, Pure, Sine, watts, Wave

How to Manufacture Automobile Electronic Parts and Earn a Handsome Income

Last Updated on February 12, 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

Recovering Electricity from Air Using a Sec Excitor Coil

Last Updated on January 21, 2026 by Swagatam 3 Comments

The following experiment shows how interestingly Mr.Steven could draw free energy from air using his home-built sec exciter coil tower, he used it to a feed a small LM317 power supply unit and made it work successfully. Read more… How to Wind the Inductors “When i hand wind my coils i didn’t use varnish its […]

Filed Under: Energy from Magnets Tagged With: Coil, Deriving, Energy, Excitor, Free

Recovering Electrical Energy from Alternator and Battery

Last Updated on January 21, 2026 by Swagatam 38 Comments

bifilarcoilcircuit

A request was sent to me by one of the readers Mr. Edward Pizzo, regarding solving a circuit issue. The idea refers to a very interesting concept of acquiring free energy through a mechanism which once initiated keeps running  in quite a perpetual fashion. Using an Alternator and two Batteries A charged battery #1 is used initially for […]

Filed Under: Energy from Magnets Tagged With: Alternator, Battery, Energy, Free

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