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Controller

Simple RGB LED Controller Circuit

Last Updated on June 1, 2026 by Swagatam 49 Comments

rgbcontroller

In this post I have explained how to make a simple RGB (Red, Green, Blue) LED controller circuit which may be designated to flash a group of RGB LEDs with a particular sequencing pattern. The idea was requested by Mr. Navdeep. Technical Specifications I want to make a display board with red, green and blue […]

Filed Under: Lamps and Lights Tagged With: Controller, LED, RGB, Simple

3-Step Automatic Fast Battery Charger/Controller Circuit

Last Updated on May 24, 2026 by Swagatam 272 Comments

3stepbatterychargercircuit

Generally it is noticed that while charging batteries people hardly pay any special attention toward the procedures. For them charging a battery is simply connecting any DC supply with matching voltage with the battery terminals. A fast battery charger circuit charges a battery with enhanced speed so that it is charged in less time than the specified period. […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Controller, Fast, Step

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

Understanding PID Controller

Last Updated on May 20, 2026 by Swagatam 4 Comments

PID

The first successful assessment of PID control theory was practically verified in the field of automatic steering systems for ships, way back around the year 1920. After this it was applied in various industrial automatic process controls requiring optimized and accurate manufacturing output specifications. For manufacturing units PID was popularly implemented for achieving precise pneumatic […]

Filed Under: Electronics Theory Tagged With: Controller, PID, Understanding

UP DOWN Logic Sequence Controller Circuit

Last Updated on May 20, 2026 by Swagatam 6 Comments

Using a set of latch/reset networks it becomes possible to allow a logic to move in a forward sequence, switching ON a given set of outputs HIGH, in response to an alternating input clock. And once the max limit is reached, the input clocks begin shutting down or withdrawing the sequence in the opposite order. […]

Filed Under: Electronics Theory Tagged With: Controller, Down, Logic, Sequence, UP

How to Make a Car Power Window Controller Circuit

Last Updated on May 16, 2026 by Swagatam 43 Comments

autorollupordownmodul BROKEN

In this article I have explained a car power window controller circuit using a single push button or a couple of push buttons. The idea was requested by Mr. Win. Technical Specifications I’m winantiyo from Indonesia, i’ve read your post in your blog and i’m very like it.i have 2 project: 1. auto roll up power […]

Filed Under: Automobile Electronics Tagged With: Controller, Power, Window

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