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Newly Updated Circuit Projects:

Automatic Torque Optimizer Circuit in Electric Motors

Last Updated on June 30, 2026 by Swagatam 22 Comments

In this article I have explained a circuit design which will help to optimize the torque of an induction motor used in electric vehicles, by analyzing its current consumption. Using a IC 555 Inverter for Toque Control The design is specifically intended for electric vehicles which are designed to work with induction motors, and therefore here […]

Filed Under: Motor Controller Tagged With: Automatic, Electric, Motors, Optimizer, Torque

SG3525 Full Bridge Inverter Circuit

Last Updated on July 27, 2026 by Swagatam 341 Comments

sg3525

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

How Supercapacitors Work

Last Updated on May 20, 2026 by Swagatam 16 Comments

supcap

In this post I have explained what a supercapacitor is, how closely similar or different to an ordinary capacitor, where it is used and we will be doing comparison between batteries and super-capacitors to find out which one of them is superior. Let’s understand the basics of an ordinary capacitor. How Ordinary Capacitor Works A […]

Filed Under: Electronics Theory Tagged With: Supercapacitors, Work

Buzzer with Incrementing Beep Rate

Last Updated on May 15, 2026 by Swagatam 38 Comments

voltagetofrequencyconverter

In this post I have explained a buzzer circuit with an incrementing beeping rate, which can be used in critical warning signalling applications. The idea was requested by Mr. Lee. Buzzer with Progressive Beep Rate Could you help me with a circuit. I’ve been trying to find but so far had no luck! I need […]

Filed Under: Audio and Amplifier Projects Tagged With: Beep, Buzzer, Incrementing, Rate

Mains High Low Voltage Protection Circuit with Delay Monitor

Last Updated on May 25, 2026 by Swagatam 167 Comments

opamp2BV

In this post I have explained an upgraded version of my previous mains 220V/120V high-low voltage cut off protection circuit which now includes a delayed restoration of power for the load with 3 LED power status indicators. The idea was requested by one of the dedicated members of this website. Circuit Objectives and Requirements Main […]

Filed Under: Security and Alarm Tagged With: Delay, High, Mains, Monitor, Protection, Voltage

High Current Wireless Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 59 Comments

wireless

In this article I have explained regarding how to design and make your own customized high current wireless battery charger circuit using wireless power transfer concept. Introduction In many of my earlier articles I have comprehensively discussed wireless power transfer, in this article we will go a step ahead and try to learn how to […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Current, High, Wireless

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