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How to Make a Cheap LED Name Plate with Illuminated Back Light

Last Updated on June 30, 2021 by Swagatam 17 Comments

In this post I have explained a simple method for making an inexpensive LED name plate with illuminated back light, which can be made by incorporating only 4 LEDs and yet acquire a dazzling back light illumination for the name plate. Introduction LEDs are no doubt gaining popularity by leaps and bounds and probably most […]

Filed Under: Mini Projects Tagged With: Back, Cheap, Illuminated, LED, Name, Plate

AC Motor Speed Controller Circuits using Back EMF

Last Updated on May 19, 2025 by Swagatam 52 Comments

drill speed controller circuit

In this post I have explained a few circuit diagrams for building AC motor speed controller circuits using back EMF concept. Working Principle of AC Motors So now, all those home type appliances like electric drill machines, sander machines, sewing machines, food mixer machines, etc. they all are mostly using that AC motor which is […]

Filed Under: Motor Controller Tagged With: AC, Back, Circuits, Controller, Motor, Speed

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