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Explained

SMPS Spot Welding Circuit using IC SG3525 Explained

Last Updated on June 4, 2026 by Swagatam 2 Comments

Spot welding needs very low voltage but very high current, that too for very short time, so now this whole thing is built around that idea. In this design we push big current in small time period for safely creating the required welding joint, done. Audio/Video Representation How the Circuit Works Now the circuit, it […]

Filed Under: SMPS and Converters Tagged With: Explained, SG3525, SMPS, Spot, Welding

SG3525 Inverter Circuits with Low Battery Cut-off and Overvoltage Regulation

Last Updated on March 16, 2026 by Swagatam 22 Comments

sg3525INVERTERCIRCUITWITHOVERLOADLOWBATTPROTECTIONCIRCUIT

In this post I have explained a 3 powerful yet simple 12V inverter circuits using a single IC SG 3525. The first circuit is equipped with a low battery detection and cut off feature, and an automatic output voltage regulation feature. You may also want to read how to design a sine wave inverter from […]

Filed Under: Inverter Circuits Tagged With: Explained, Inverter, SG3525, Simple, Sine, Wave

DPDT Relay Working, Pinouts, Testing Explained

Last Updated on May 20, 2026 by Swagatam 23 Comments

In this post we are going to understand about how this DPDT relay actually works, how we identify its pinouts, and how we can use it in our projects. We shall go step by step so that you can feel confident with every small thing about it. Introduction We know that a DPDT relay means […]

Filed Under: Electronics Theory Tagged With: DPDT, Explained, Pinouts, Relay, Testing, Working

FET Current Source: Explained with Formulas

Last Updated on May 20, 2026 by Swagatam Leave a Comment

An FET Current Source is one special type of active circuit that is using a Field Effect Transistor for giving a steady and constant current into a circuit. We are doing this because sometimes we want that current should not change, it should remain fixed and stable. Why We Need Constant Current Now you may […]

Filed Under: Electronics Theory Tagged With: Current, Explained, FET, Formulas, Source

Servo Motor Working Explained

Last Updated on June 30, 2026 by Swagatam Leave a Comment

We know that servo motors already exist for very long time and we also see that many people use them in many applications. These motors look small but they give big power and also they save lot of energy. So now many people who like electronic things and who want to understand more about such […]

Filed Under: Motor Controller Tagged With: Explained, Motor, Servo, Working

How to Sense Current Using Op-Amp: Low Side and High Side Circuits Explained

Last Updated on November 18, 2025 by Swagatam 6 Comments

In this post we are going to learn one very interesting and also very much useful topic that is how we can measure the current which is going through any load by just using some normal resistors and one op amp circuit. We know already that current is one very important thing in every electrical […]

Filed Under: Sensors and Detectors Tagged With: Circuits, Current, Explained, High, Sense, Side

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