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Newly Updated Circuit Projects:

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

10 Useful Function Generator Circuit Diagrams Explained

Last Updated on February 27, 2026 by Swagatam 27 Comments

function generator circuit

In this post I have explained how to build 10 simple yet useful function generator circuits using IC 4049, IC 8038, IC 741, IC 7400, transistors, UJTs etc. for generating accurate square waves, triangle waves, and sinewaves through easy switch operations. 1) Using IC 4049 Using only one low-cost CMOS IC 4049 and a handful […]

Filed Under: Meters and Testers Tagged With: Diagrams, Explained, function, Generator, Useful

SG3525 Full Bridge Inverter Circuit

Last Updated on February 25, 2026 by Swagatam 337 Comments

In this post we try to investigate how to design a SG3525 full bridge inverter circuit by applying an external bootstrap circuit in the design. The idea was requested by Mr. Mr. Abdul, and many other avid readers of this website. Audio/Video Representation Why Full-Bridge Inverter Circuit is not Easy Whenever we think of a […]

Filed Under: Inverter Circuits Tagged With: Bridge, Full, Inverter, SG3525

Remote Controlled Ceiling Fan Regulator Circuit

Last Updated on February 17, 2026 by Swagatam 122 Comments

infraredfandimmercircuit

In this article I have explained a few simple infrared TV remote controlled fan regulator or dimmer circuits using ordinary parts such as a 4017 IC and a 555 IC. The first concept uses a standard MOSFET based SSR for controlling the fan load and for easy and clean PWM signal operation from the IC […]

Filed Under: Remote Control Circuits Tagged With: Ceiling, Controlled, Regulator, Remote

Understanding SG3525 IC Pinouts

Last Updated on February 16, 2026 by Swagatam 332 Comments

sg3525 ic pin out explained

In this article I have explained the pinout functions of the IC SG3525 which is a regulating pulse width modulator IC. So I have explained in details: Main Technical Features The main features of the IC SG3525 may be understood with the following points: Pinout Diagram of the IC SG3525 PinOut Description A practical implementation […]

Filed Under: Electronics Theory Tagged With: Pinouts, SG3525, Understanding

Mains AC Short Circuit Breaker/Protector – Electronic MCB Circuit

Last Updated on February 15, 2026 by Swagatam 117 Comments

ShortCircuitbreaker

In this post I will try to explain the making of a simple 220 V, 120 V AC mains short circuit breaker using an SCR and a triac combination, (researched and designed by me). The circuit is an electronic version of the normal main circuit breaker MCB units that we use in our homes. Note: […]

Filed Under: Voltage Control and Protection Tagged With: AC, Breaker, Electronic, Mains, Protector, Short

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