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Title: Construction and Working Principles of a Multimeter and a Digital Voltmeter
Description: This document speaks about a multimeter and a voltmeter. It first gives an introduction that tells what a measuring instrument is and why we as individuals use measuring instruments. As it progresses it tells what a Multimeter is and describes the different parts of a multimeter, this document also gives a graphical representation of a multimeter. This document also gives you information on how to use a Multimeter to measure Voltage, Resistance, and Current. Lastly, there is the importance of a multimeter. In the second section, there is information about a digital voltmeter this information includes, what is a digital voltmeter, how to use a digital voltmeter, and the importance of a digital voltmeter, there is also a graphical representation of a digital voltmeter.
Description: This document speaks about a multimeter and a voltmeter. It first gives an introduction that tells what a measuring instrument is and why we as individuals use measuring instruments. As it progresses it tells what a Multimeter is and describes the different parts of a multimeter, this document also gives a graphical representation of a multimeter. This document also gives you information on how to use a Multimeter to measure Voltage, Resistance, and Current. Lastly, there is the importance of a multimeter. In the second section, there is information about a digital voltmeter this information includes, what is a digital voltmeter, how to use a digital voltmeter, and the importance of a digital voltmeter, there is also a graphical representation of a digital voltmeter.
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Subject:
Electrical and Electronic Engineering Technology
Research on:
Construction and working principles of electronic
measuring instrument
Sabrina Hayden
Introduction
Measuring instruments make our lives easier and these instruments are important in the
workplace, especially for the accuracy of data
...
Since we cannot see or read the voltage or current in a circuit,
engineers decided to implement measuring instruments that can tell what is going on in a circuit
or any other electronic item
...
Instruments that are made need to
adapt to the Circuit are the object that they will be working on this is important so that the
reading or the result that the electrical object should give doesn't get affected by the instrument
...
A multimeter can measure voltage and resistance current
...
Current is measured with an ammeter and the
unit for this is amps or milliamps while resistance is measured with an ohmmeter and the unit to
represent resistance is ohms or m
...
Parts of a multimeter
Buttons: used for selecting various functions
Display: this is where measurements results can be viewed by the user
Dial/rotary switch: this is used for selecting primary values
Input jacks: these are the testing leads used
...
They serve as the
conductor and the connection between the multimeter and the item in testing
...
Loads such as
Motors need the correct amount of voltage to operate properly
...
*Whenever testing for voltage there needs to be a predictive value
...
● Afterward, adjust the meter dial to the suitable function of AC or DC
● Arrange the number a little bit higher than the predictive value, if there is no predictive
value set the range to the maximum number available
...
Resistant testing also checks for short circuits and ground
faults and these can cause possible injuries to workers in the electrician field
...
Using a multimeter to test current
This is pretty similar to the testing of voltage
...
If they are two components recorded you can calculate the missing component by using (V=I*R)
Importance of a multimeter
Multimeters are important because they can troubleshoot some of the problems and faults
associated with electronic systems
...
Digital voltmeter
The Digital voltmeter invented by Andrew Kay in 1954 is a type of electronic measuring device
that measures the potential voltage difference across a point in an electric circuit
...
A voltmeter must have high resistance because we only need to know the voltage across a
specific component or between two points and we do not want the readings to be interrupted
...
The design of a digital voltmeter is similar to the exterior design of a multimeter
...
How to use a voltmeter
If there is a specific component that you would like to measure the voltage across
● You will first take the leads of the voltmeter, and place the red lead to the positive
terminal of the component, and the black lead to the negative terminal of the component
...
Importance of voltmeter
Voltmeters are much more reliable as well as accurate and they eliminate human errors
...
It also has great speed and stability
...
Reference
Working Principle of Voltmeter and Types of Voltmeter | Electrical4U
https://electricalacademia
...
com
Voltmeters and Ammeters (video) | Circuits | Khan Academy
Digital Voltmeters Working Principle of Digital
Title: Construction and Working Principles of a Multimeter and a Digital Voltmeter
Description: This document speaks about a multimeter and a voltmeter. It first gives an introduction that tells what a measuring instrument is and why we as individuals use measuring instruments. As it progresses it tells what a Multimeter is and describes the different parts of a multimeter, this document also gives a graphical representation of a multimeter. This document also gives you information on how to use a Multimeter to measure Voltage, Resistance, and Current. Lastly, there is the importance of a multimeter. In the second section, there is information about a digital voltmeter this information includes, what is a digital voltmeter, how to use a digital voltmeter, and the importance of a digital voltmeter, there is also a graphical representation of a digital voltmeter.
Description: This document speaks about a multimeter and a voltmeter. It first gives an introduction that tells what a measuring instrument is and why we as individuals use measuring instruments. As it progresses it tells what a Multimeter is and describes the different parts of a multimeter, this document also gives a graphical representation of a multimeter. This document also gives you information on how to use a Multimeter to measure Voltage, Resistance, and Current. Lastly, there is the importance of a multimeter. In the second section, there is information about a digital voltmeter this information includes, what is a digital voltmeter, how to use a digital voltmeter, and the importance of a digital voltmeter, there is also a graphical representation of a digital voltmeter.