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Understanding Solar Panels

Last Updated on May 24, 2019 by Swagatam 5 Comments

285W Polycrystalline Solar Panels

Solar panels are devices which are used for generating electricity from sun light. Solar panels consist of many individual photo voltaic cells arranged in series. Introduction Each cell is able to generate a small amount of voltage in response to the incident sun rays over its surface. Arrays of these individual cells are connected in […]

Filed Under: Electronics Theory Tagged With: Panels, Solar, Understanding

4 Simple Uninterruptible Power Supply (UPS) Circuits Explored

Last Updated on July 13, 2024 by Swagatam 193 Comments

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In this post I have investigated 4 simple 220V Mains Uninterruptible power supply (UPS)  designs using 12V battery, which can be understood and constructed by any new enthusiast. These circuits can be used for operating an appropriately selected appliance or load, let’s explore the circuits. Design#1: Simple UPS using a Single IC A simple idea […]

Filed Under: Inverter Circuits Tagged With: Circuits, Power, Simple, Supply, Uninterruptible, UPS

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

Simple Hobby Circuit Projects

Last Updated on August 6, 2024 by Swagatam 201 Comments

40 Watt Fluorescent Lamp Inverter Circuit Diagram2C Image

A few of the interesting and useful hobby electronic circuit diagrams already published in this blog have been selected and compiled here for your quick reference and understanding. What is a Hobby Circuit? A hobby circuit is an electronic circuit project specially designed to suit new hobbyists. These circuits are mostly small and easy to […]

Filed Under: Mini Projects Tagged With: Hobby, Projects, Simple

4 Automatic Day Night Switch Circuits Explained

Last Updated on October 20, 2022 by Swagatam 104 Comments

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The 4 simple light activated day night switch circuits explained here can all be used for controlling a load, normally a 220V lamp, in response to the varying levels of the surrounding ambient light. The circuit can be used as a commercial automatic street light control system, as a domestic porch light or corridor light […]

Filed Under: Sensors and Detectors Tagged With: Automatic, Circuits, Explained, Night, Switch

3 Glittering LED Christmas Tree Light Circuits Explored

Last Updated on January 20, 2025 by Swagatam 34 Comments

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In this post we present 3 circuit ideas for creating beautiful Christmas tree light decorations. The first idea explains a transistorized flashing blinking LED string light which can be mounted on a Christmas tree. The second circuit diagram describes an LED light effect generator which can be also installed over a real Christmas tree for […]

Filed Under: Mini Projects Tagged With: Christmas, Circuits, Glittering, LED, Light, Tree

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