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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 January 2, 2024 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 63 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

How to Make a Telephone Amplifier Circuit

Last Updated on May 5, 2022 by Swagatam 8 Comments

telephoneamplifiercircuitusingICCA3020

The simple telephone ring tone amplifier circuit I have explained in this article saves the inconvenience of picking the telephone handset while speaking over a call. This circuit also particularly becomes useful when there’s a need of the conversation to become audible to a number of people or a group of people. Introduction When the […]

Filed Under: Audio and Amplifier Projects Tagged With: Amplifier, Telephone

How to Use an Op amp as a Comparator Circuit

Last Updated on March 28, 2022 by Swagatam 56 Comments

op amp working

In this post I will comprehensively explain how to use any opamp as a comparator in a circuit for comparing a input differentials and producing the corresponding outputs. What is an Op amp Comparator We’ve been using an op amp IC probably since we started learning electronics, I am referring to this wonderful little IC […]

Filed Under: Electronics Theory Tagged With: Comparator

IC 7805, 7812, 7824 Pinout Connection Explained

Last Updated on October 16, 2022 by Swagatam 40 Comments

78XX voltage regulator range of ICs

In this post I have explained how to connect common 78XX voltage regulator ICs such as 7805, 7812, 7824 etc for getting fixed regulated output voltages at 5 V, 12 V, or 24 V outputs respectively. The input voltage must be at least 3 V higher than the desired output voltage. For example, if a […]

Filed Under: Power Supply Circuits Tagged With: 7805, 7812, 7824, Connection, Explained, Pinout

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