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Meters and Testers

How to Measure Transformer’s Current Capacity

Last Updated on June 30, 2025 by Swagatam Leave a Comment

We can use a shunt resistor and ammeter concept to find out how much maximum current a transformer can give, in other words, we are trying to know the current rating or amp capacity of a transformer. If you do not wish to read the full article below, you can feel free to watch the […]

Filed Under: Meters and Testers Tagged With: Capacity, Current, Measure, Transformer

DSO138: Best Small Oscilloscope for Electronic Hobbyists

Last Updated on March 30, 2025 by Swagatam 25 Comments

DSO138 oscilloscope button specifications

An oscilloscope is a device that measures and analyses signals in circuits. It’s an indispensable equipment for everyone who works with electronic circuits since it enables them to see the activity of a wave in real – time basis. The DSO138 is one of the most popular oscilloscopes on the market today. We’ll give a […]

Filed Under: Meters and Testers Tagged With: Best, DSO138, Electronic, Hobbyists, Oscilloscope, Small

How to Connect Digital Ammeter, Voltmeter Modules M4430, M3430

Last Updated on February 18, 2025 by Swagatam 17 Comments

In this post I will be talking about the Chinese M4430 digital ammeter, voltmeter module which is a really neat, compact digital meter that you can mount on a panel. Whats great about it is that it is designed to measure and show us both the DC voltage and the current at the same time. […]

Filed Under: Meters and Testers Tagged With: Ammeter, Connect, Digital, M4430, Modules, Voltmeter

0 to 99 Digital Pulse Counter Circuit Diagrams

Last Updated on January 21, 2025 by Swagatam 29 Comments

0to99countercircuit

The proposed 00-99 digital pulse counter circuit becomes very handy in places where you need to keep the people organized in some specified order. Operating details of the digital counter As may be referred the circuit employs the popular 555 IC to genearte the pulse clocks. The pulse counting is done with the help of […]

Filed Under: Meters and Testers Tagged With: Counter, Diagrams, Digital, Pulse

3 Frequency to Voltage Converter Circuits Explained

Last Updated on January 20, 2025 by Swagatam 6 Comments

f2Bto2Bv

As the name suggests frequency to voltage converters are devices that convert a varying frequency input into a correspondingly varying output voltage levels. Here we study three easy yet advanced designs using IC 4151, IC VFC32 and IC LM2907. 1) Using IC 4151 This frequency voltage converter circuit using IC 4151 is characterized by its […]

Filed Under: Meters and Testers Tagged With: Circuits, Converter, Explained, Frequency, Voltage

2 Simple Milliohm Meter Circuits [Measure Low Resistances below 1 Ohm with these Circuits]

Last Updated on January 19, 2025 by Swagatam 5 Comments

low ohm tester circuit compressed

The low resistance measuring circuit I have explained below can be used for measuring all milliohm resistances below 1 ohm with extreme accuracy. The resistance to be measured can be as low as 0.01 ohm or 10 milliohm. The output of the circuit converts the resistance value to exactly equivalent volts, which means the output […]

Filed Under: Meters and Testers Tagged With: Circuits, Measure, Meter, Milliohm, Resistances, Simple

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