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Simple Analogue Weighing Scale Meter Circuit

Last Updated on June 8, 2026 by Swagatam 18 Comments

simple weighing scale machine

Learn a super simple procedure to make a weighing scale meter circuit useful for measuring smaller magnitudes of weight. The Concept The concept is very simple, a light beam is allowed to pass through a linearly colored ribbon and fall over an LDR. The color shade of the ribbon positioned in front of the light […]

Filed Under: Meters and Testers Tagged With: Analogue, Meter, Scale, Simple, Weighing

Simple Stereo Amplifier Circuit Using IC TDA1521

Last Updated on May 15, 2026 by Swagatam 29 Comments

StereoAmplifierCircuitDiagram252CImage

A simple stereo audio amplifier circuit discussed here is built around the IC TDA 1521, requires very few external passive components and is able to provide a powerful 12 + 12 watts of music output. Main Features of the Stereo Amplifier IC The IC contains all the built in features required for an amplifier circuit […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Simple, Stereo, TDA1521

How to Build a Simple Egg Incubator Thermostat Circuit

Last Updated on July 26, 2026 by Swagatam 212 Comments

eggincubatorthermostatcircuit

An electronic incubator thermostat circuit shown in this article is not only simple to build but is also easy to set and acquire exact tripping points at various different set temperature levels. The setting may be completed through two discrete variable resistors. How Incubators Work An Incubator is a system where bird/reptile eggs are hatched […]

Filed Under: Temperature Controllers Tagged With: Build, Incubator, Simple, Thermostat

Simple Hi Efficiency LED Torch Circuit

Last Updated on June 1, 2026 by Swagatam 84 Comments

285c210b3444e17241b5748afd197f2d041f7d2a orig 1

A simple LED torch circuit that would light up 3 white LEDs from a 6 volt supply and would make your battery last forever is described here. A useful voltage doubler circuit is incorporated here to make a highly efficient circuit using just a handful of components. Introduction Learn more how to build it. White […]

Filed Under: Lamps and Lights Tagged With: Efficiency, LED, Simple, Torch

Simple Solar Tracker System – Mechanism and Working

Last Updated on February 28, 2026 by Swagatam 88 Comments

The circuit and the mechanism I have explained in this article may be considered as the easiest and perfect dual axis solar tracker system. How the Dual Axis Solar Tracker Concept Works The device is able to track the daytime motion of the sun precisely and shift in the vertical axis accordingly. The device also […]

Filed Under: Solar Controller Circuits Tagged With: Mechanism, Simple, Solar, System, Tracker, Working

2 Simple Earth Leakage Circuit Breaker (ELCB) Explained

Last Updated on January 19, 2025 by Swagatam 36 Comments

The discussed Earth leakage circuit breaker diagrams will monitor the leakage current level of the earthing line of your house electrical sockets and will trip the appliances as soon a fault is detected. Here I have explained 2 designs, first using transistors only and the second using IC LM324. Introduction If anything goes wrong with […]

Filed Under: Security and Alarm Tagged With: Breaker, Earth, ELCB, Explained, Leakage, Simple

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