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Electronic Engine Speed Governor Circuit

Last Updated on June 30, 2026 by Swagatam 27 Comments

In this post I have explained an electronic engine speed governor or controller circuit using an RPM feedback signal loop through a hall effect sensor network. The idea was requested by Mr. Imsa Naga. Circuit Objectives and Requirements Thank you very much for your time. I believe this circuit would be suitable for a single […]

Filed Under: Motor Controller Tagged With: Electronic, Engine, Governor, Speed

Electronic Door for Pets Circuit – Opens when Pet Nears the Door

Last Updated on July 3, 2019 by Swagatam 2 Comments

In this post I have explained a simple electronic door circuit for pets which can be used as an electronic dog door for allowing only your specific pet dog to use the entrance, while keeping it locked for “strangers”. The idea was requested by Mr. Dave Monette. Circuit Objectives It’s been a while since we […]

Filed Under: Wireless Circuits Tagged With: Door, Electronic, Nears, Opens, Pets

Electronic Component Buying Guide for New Hobbyists

Last Updated on May 17, 2026 by Swagatam 8 Comments

buy component

Are you a beginner to electronics? Then here are few guidelines which might help you to buy some really useful components, so that you are always for an electronic and are never short of some crucial component.. OBJECTIVE: Not only for beginners, this will also help other hobbyists to buy some most commonly used components. […]

Filed Under: Datasheets and Components Tagged With: Buying, Component, Electronic, Guide, Hobbyists

Mains 20 Watt Electronic Ballast Circuit

Last Updated on June 1, 2026 by Swagatam 22 Comments

20 watt flourescent tube

In this post I have explained a simple 20 watt fluorescent ballast circuit using a single chip FAN7711 from Fairchild semiconductor. The proposed mains 220V operated, 20 watt fluorescent ballast circuit is built around an LCC resonant tank and a half-bridge network. Implementing Zero Voltage Switching The main features and operations may be understood with […]

Filed Under: Lamps and Lights Tagged With: Ballast, Electronic, Mains, Watt

Electronic Scoreboard Circuit Using IC 4033 Counter

Last Updated on May 21, 2026 by Swagatam 12 Comments

simple4033counterscoreboardcircuit

A simple multi-digit electronic score board system can be built using a basic 4033 IC counter circuit. The whole procedure is explained in the following article. So far we have learned quiet a lot about this interesting IC 4033 through the following posts that have comprehensively discussed the pinouts and cascading procedures of the chip. […]

Filed Under: Games and Sports Projects Tagged With: 4033, Counter, Electronic, Scoreboard

Electronic Load Controller (ELC) Circuit

Last Updated on May 21, 2026 by Swagatam 86 Comments

ELCvoltagemonitorcircuit

In this post I have explained a simple electronic load controller or governor circuit which automatically regulates and controls the rotational speed of a hydro-electric generator system by adding or deducting an array of dummy loads. The procedure ensures a stabilized voltage and frequency output for the user. The idea was requested by Mr. Aponso […]

Filed Under: Grid and 3-Phase Tagged With: Controller, ELC, Electronic, Load

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