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Solar Water Heater Circuit with Battery Charger

Last Updated on May 17, 2026 by Swagatam 24 Comments

water2Bheater

The proposed solar water heater with battery charger controller circuit explains a simple method of utilizing the excess solar energy from a solar panel for heating water in water tanks or swimming pools or poultry egg chambers. Normally the circuit also functions like an automatic solar battery charger, and simultaneously powers domestic electrical appliances. Understanding Solar Charging […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: Battery, Charger, Heater, Solar, Water

Simple Solar Garden Light Circuit – With Automatic Cut Off

Last Updated on June 1, 2026 by Swagatam 342 Comments

A very simple automatic solar light system for illuminating your garden passages can be built using some LEDs, a rechargeable battery and a small solar panel. The system automatically switches ON the lamps at dusk and switches them OFF at dawn. Main features Although the following simple automatic solar LED garden light circuit looks simple, […]

Filed Under: Lamps and Lights, Solar Controller Circuits Tagged With: Automatic, Garden, Light, Simple, Solar

High Current Solar Battery Charger Circuit – 25 Amps

Last Updated on May 17, 2026 by Swagatam 45 Comments

30ampcharger

This circuit is capable of providing as high as 25 Amps of current at any specified voltage between 1.25 V to  30V as per the adjustment of the given pot. The current is constant irrespective of the voltage settings. The circuit can be used for charging batteries in range of 50 to 200 AH. How […]

Filed Under: Battery Charger Circuits Tagged With: Amps, Battery, Charger, Current, High, Solar

3 Simple Solar Panel/Mains Changeover Circuits

Last Updated on January 2, 2024 by Swagatam 40 Comments

solarpanelmainsAVCchangeoverrelaycircuit

The discussed automatic change over relay circuit was requested by Mr.Karimulla Baig. The circuit normally charges the connected battery at constant current through the power received from the solar panel, and reverts to DC power from an AC/DC adapter in the absence of solar energy (during night time). Let’s the read the request in more details: Technical […]

Filed Under: Solar Controller Circuits Tagged With: Changeover, Circuits, Mains, Panel, Simple, Solar

Homemade Solar MPPT Circuit – Poor Man’s Maximum Power Point Tracker

Last Updated on February 24, 2020 by Swagatam 200 Comments

simplempptchargercircuit

MPPT stands for maximum power point tracker, which is an electronic system designed for optimizing the varying power output from a solar panel module such that the connected battery exploits the maximum available power from the solar panel. Introduction NOTE: The discussed MPPT circuits in this post do not employ the conventional control methods like “Perturb and […]

Filed Under: Solar Controller Circuits Tagged With: Homemade, Maximum, MPPT, Poor, Power, Solar

Easiest Single Axis Solar Tracker System

Last Updated on January 14, 2023 by Swagatam 8 Comments

algorithmbasedsolartrackermechanismcircuit

In this post I have explained how to make a very easy solar tracker circuit using a predetermined algorithm through a 555 IC timer circuit. Introduction In this site I have already published a solar tracker system circuit which is intended for automatically adjusting the solar panel face such that it stays perpendicular to the incident sun rays at […]

Filed Under: Solar Controller Circuits Tagged With: Axis, Easiest, Single, Solar, System, Tracker

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