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Meters and Testers

How to Build Maxwell Inductance-Capacitance Bridge for measuring High Value Inductors

Last Updated on March 5, 2026 by Swagatam

For measuring high inductance like 100H, the bridge we use is: James Clerk Maxwell Bridge which people also call Maxwell Inductance-Capacitance Bridge. It is made for medium to high Q inductors but when the inductance is large then it still behaves nicely, so people mostly prefer this one. Audio/Video Representation Basic Concept Basic idea of […]

Filed Under: Meters and Testers Tagged With: Bridge, Build, Capacitance, Inductance, Maxwell, Measuring

Simple ESR Meter Circuits Explained

Last Updated on March 2, 2026 by Swagatam 79 Comments

In this post I have explained a few simple ESR meter circuits which can be used for identifying bad capacitors in an electronic circuit without removing them practically from the circuit board. The idea was requested by Manual Sofian… Technical Specifications Do you have a schematic about ESR meter. Technicians recommend me to check the […]

Filed Under: Meters and Testers Tagged With: ESR, Meter, Simple

10 Useful Function Generator Circuit Diagrams Explained

Last Updated on February 27, 2026 by Swagatam 27 Comments

function generator circuit

In this post I have explained how to build 10 simple yet useful function generator circuits using IC 4049, IC 8038, IC 741, IC 7400, transistors, UJTs etc. for generating accurate square waves, triangle waves, and sinewaves through easy switch operations. 1) Using IC 4049 Using only one low-cost CMOS IC 4049 and a handful […]

Filed Under: Meters and Testers Tagged With: Diagrams, Explained, function, Generator, Useful

Arduino Frequency Meter Using 16×2 Display

Last Updated on February 9, 2026 by Swagatam 4 Comments

arduinodisplayconnection

In this article I will show how to construct a digital frequency meter using Arduino whose readings will be showcased on a 16×2 LCD display and will have a measuring range from 35 Hz to 1MHz. Introduction Being electronics enthusiast, we all would have come across a point where we need to measure frequency in […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: 16x2, Arduino, Display, Frequency, Meter

Making a Single Channel Oscilloscope using Arduino

Last Updated on January 28, 2026 by Swagatam 24 Comments

lcdconn

In this interesting post, we are going to make a simple single channel oscilloscope using Arduino and a personal computer, where the waveforms will be showcased on the PC’s display and frequency and time period of the input waves will be displayed on the 16 x 2 display.  Introduction Every electronics enthusiast once said “I […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: Arduino, Channel, Making, Oscilloscope, Single

Digital Capacitance Meter Circuit Using Arduino

Last Updated on January 26, 2026 by Swagatam 4 Comments

Testing Capacitor with Arduino

In this post I will show how to construct a digital capacitance meter circuit using Arduino which can measure capacitance of capacitors ranging from 1 microfarad to 4000 microfarad with reasonable accuracy. Introduction We measure value of the capacitors when the values written on the capacitor’s body is not legible, or to find the value […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: Arduino, Capacitance, Digital, Meter

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