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Newly Updated Circuit Projects:

IC LM338 Application Circuits

Last Updated on June 23, 2026 by Swagatam 90 Comments

LM338basicadjustablepowersupplycircuitdiagram

In this post we will try to analyze a few interesting IC LM338 based power supply circuits and related application circuits which can used by all hobbyists and professional for their day to day electronic circuits and experiments Introduction The IC LM338 by TEXAS INSTRUMENTS, is a versatile IC which can be wired in numerous […]

Filed Under: Mini Projects Tagged With: Application, Circuits, LM338

How to Make a 25 Amp, 1500 watts Heater Controller Circuit

Last Updated on January 2, 2024 by Swagatam 142 Comments

25a1500wattsheatercontrollercircuit 1

In this article I will try to explain the making of a 1500 watt simple heater controller circuit at 25 amp current rate using an ordinary triac based dimmer switch circuit  Using Advanced Snubber less Triacs Controlling heaters rated as high as 1500 watt requires stringent specifications with the controlling unit for safe and effective […]

Filed Under: Temperature Controllers Tagged With: 1500, Controller, Heater, watts

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

Last Updated on June 1, 2026 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: Lamps and Lights Tagged With: Back, Cheap, Illuminated, LED, Name, Plate

Vibration Meter Circuit for Detecting Vibration Strength

Last Updated on November 20, 2023 by Swagatam 12 Comments

simple vibration meter circuit 1

In this article I have explained a couple of simple vibration meter circuits which can detect and measure the strength of mechanical vibrations. Video Clip demonstrating the Vibration meter working The proposed circuits are built using transistors and also with an IC for getting a bar graph LED sequence for the level indications. The bar […]

Filed Under: Sensors and Detectors Tagged With: Detecting, Meter, Strength, Vibration

4 Simple VU Meter Circuits Explained

Last Updated on June 8, 2026 by Swagatam 50 Comments

music light

In this post I have explained how to build 4 interesting VU meter circuits, using LEDs and using a moving coil meter. What is a VU Meter VU meter or a volume unit meter circuit is a device used for indicating the music volume output from an amplifier or a loudspeaker system. It may be […]

Filed Under: Meters and Testers Tagged With: Circuits, Explained, Meter, Simple, VU

How to Make a 220V to 110V Converter Circuit

Last Updated on July 5, 2025 by Swagatam 69 Comments

220v AC to 110v DC converter circuit diagram

In this post we will unravel a few homemade crude 220V to 110V converter circuits options which will enable to user the user use it for operating small gadgets with a different voltage specs. UPDATE: An SMPS circuit is the recommended option for building this converter, so for an SMPS 220V to 110V converter design […]

Filed Under: SMPS and Converters Tagged With: 110V, 220V, Converter

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