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## Simple LED VU Meter Circuit

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 also considered as a device for displaying the PMPO of the amplifier at a particular volume setting. Introduction Though the unit looks quite technical, which is applied … Read moreSimple LED VU Meter Circuit

## How to Make a Digital Voltmeter, Ammeter Module Circuits

In this article we learn 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 of … Read moreHow to Make a Digital Voltmeter, Ammeter Module Circuits

## IC 555 based Capacitance Meter Circuit

In this post we will talk about a couple easy yet very handy little circuits in the form of  frequency meter and capacitance meter using the ubiquitous IC 555. 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 … Read moreIC 555 based Capacitance Meter Circuit

## Make a Workbench Multimeter With the IC 741

Testing and troubleshooting electronic project circuits requires a multimeter, so new hobbyists may feel interested to try the following homemade multimeter circuits as their next electronic project. Using a Single Opamp 741 The few opamp based meter circuits such as Ohmmeter, voltmeter, ammeter are discussed below using the IC 741 and just a few other … Read moreMake a Workbench Multimeter With the IC 741

## How to Measure AC Milli-volts Using IC 741

In this article we study an op amp based circuit designed to measure AC millivolts accurately, let’s learn the details from the following explanation. The circuit shown below can be used to measure DC potentials in the range of milli-volts. The circuit is highly sensitive and is calibrated to measure voltages in the range of … Read moreHow to Measure AC Milli-volts Using IC 741

## Making a RTD Temperature Meter Circuit

In this post we learn the making of an RTD temperature meter circuit, and also learn about different RTDs and their working principles through formulas. What’s an RTD A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it’s subjected to heat. This … Read moreMaking a RTD Temperature Meter Circuit