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Meters and Testers

7 Simple Continuity Tester Circuits Explained

Last Updated on June 8, 2026 by Swagatam 43 Comments

simplecontinuitytestercircuit

If you are looking for a simple circuit to test continuity of wires and long conductors, the explained 7 easy to build continuity circuits are the ones which you can try and might fulfill your requirement. What is a Continuity Tester A continuity tester is a device which is used for identifying the correct continuity […]

Filed Under: Meters and Testers Tagged With: Circuits, Continuity, Explained, Simple, Tester

Make this Amplifier Power Meter Circuit

Last Updated on June 8, 2026 by Swagatam 6 Comments

amplifier power meter circuit 1

Music Amplifiers have always intrigued us due to their massive amplifying capabilities which completely changes the dimensions of the delivered music outputs. Fundamentally it’s the power of the amplifier that’s always on the scanner and we find folks getting too obsessed by the power rating of their procured amplifier unit. Introduction However many of us […]

Filed Under: Meters and Testers Tagged With: Amplifier, Meter, Power

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 Digital Voltmeter, Ammeter Module Circuits

Last Updated on June 8, 2026 by Swagatam 29 Comments

2

In this article I have explained how to build a digital voltmeter and a digital ammeter combined circuit module for measuring DC volts and current through different ranges, digitally. Introduction Electrical parameters like voltage and current are inherently associated with electronics and with electronic engineers. Any electronic circuit would be just incomplete without appropriate supply […]

Filed Under: Meters and Testers Tagged With: Ammeter, Circuits, Digital, Module, Voltmeter

6 Simple Capacitance Meter Circuits Explained – Using IC 555 and IC 74121

Last Updated on June 8, 2026 by Swagatam 59 Comments

FrequencyMeter

In this post I will talk about 6 easy yet accurate capacitance meter circuits using the ubiquitous IC 555 and many other easily available ICs. How Capacitors Work Capacitors are one of the main electronic components which come under the passive component family. These are extensively used in electronic circuits and virtually no circuit can […]

Filed Under: Meters and Testers Tagged With: 555, Capacitance, Circuits, Explained, Meter, Simple

Simple Analogue Weighing Scale Meter Circuit

Last Updated on June 8, 2026 by Swagatam 18 Comments

simple weighing scale machine

Learn a super simple procedure to make a weighing scale meter circuit useful for measuring smaller magnitudes of weight. The Concept The concept is very simple, a light beam is allowed to pass through a linearly colored ribbon and fall over an LDR. The color shade of the ribbon positioned in front of the light […]

Filed Under: Meters and Testers Tagged With: Analogue, Meter, Scale, Simple, Weighing

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