Digital multimeters dmm, once called voltmeters, have been described as the tape measure for engineers in the new millennium. The basics of digital multimeters ideal electrical. Acdc volt, acdc current, checking of smd components and digital gate operation high low, pulse etc can be done more accurately by a digital multimeter. Measuring dc voltage and resistance basic multimeter. Analog meter precautions do not jar, manhandle, drop or pile tools or any thing else on your meter. Patrick c elliott field sales engineer ideal industries, inc january 2010, version 1. This tutorial will show you how to use a digital multimeter dmm, an indispensable tool that you can use to diagnose circuits, learn about other peoples electronic designs, and even test a battery. To keep things simple, all the information in this article was done using a digital, easytouse and read multimeter. Here are a few multimeters and kits with multimeters to suit the needs of beginners and experienced hobbyists alike. A digital multi meter dmm is simply an electronic instrument that measure electrical parameters.
Ive looked long and hard for a good, lowcost multimeter and the vc830l is everything i need in a daytoday multimeter. In order to achieve the greatest accuracy, you must take the necessary steps to eliminate potential measurement errors. Overview multimeter voltmeter ammeter ohmeter diode%check continuity 4. A typical digital multimeter will have the ability to measure volts, ohms, and amperes. The diode should conduct and the meter will display a value usually the voltage across the diode in mv, mv 1v. The basics of digital multimeters a guide to help you understand the basic features and functions of a digital multimeter.
The basics of digital multimeters the basics of digital multimeters by jim gregorec, ideal industries, inc. The digital multimeter is used to measure voltage, current, and resistance. Oct 17, 2017 a multimeter is an essential tool in any electronics lab. Digital multimeter the firstchoice multimeter for electrical professionals designed for basic electrical tests, the fluke 101 digital multimeter offers reliable measurements for residential commercial electricians and heating and air conditioning technicians. Record the measured ohms and the theoretical value.
Voltage v with one row of dashed lines under a solid line this is the dc side of the meter. A digital multimeter dmm is a test tool used to measure two or more electrical valuesprincipally voltage volts, current amps and resistance ohms. On the meter i am using there are three basic sections. What is a dmm digital multimeter electronics notes. How to measure dc voltage with a digital multimeter. A multimeter or a multitester, also known as a vom voltohmmilliammeter, is an electronic measuring instrument that combines several measurement functions in one unit. The multimeter displays 0 ohms with the leads shorted together. For this tutorial we will be using the sparkfun vc830l. In both of these precautions, you do not want to jar the needle from it jeweled pivot. Digital multimeters dmm, once called voltmeters, have been described as the tape measure for engineers in the new. Dmms are available very cheaply and these digital multimeters can provide very high degrees of accuracy when measuring the parameters within an electronics or electrical circuit. Basics of digital multimeter basics of electrical engineering.
With the development of digital technology, many meters are able to provide additional measurements beyond those of the basic voltage current and resistance. Digital multimeter tutorials the agilent 34401a is capable of making highly accurate measurements. Chances are your multimeter will be able to do all these basics, but not every multimeter will look the same. A digital multimeter dmm may look complicated and intimidating at first glance, but once you understand the display, dial, and port panel, youll have a better grasp of dmm basics. Multimeters are used in all areas of electronics to determine the voltage, amperage or resistance in an electrical circuit. A digital multimeter dmm is a multifunctional meter that displays its electrical quantitative values on an lcd screen. When buying a digital multimeter it is worth selecting one that can measure parameters that could be envisaged to be needed. Digital multimeter is a test equipment which offers several electronic measurement task in one tool. Test the 3 before using it to make sure it is operating properly. How to use a digital multimeter for dummies housetechlab. This simple and affordable tool can be your lifeline in. It is our recommendation that you start by completing the electrical measurement safety course. It also covers the fundamentals of using electrical testers as well as the testing of circuits and circuit components.
An inexpensive digital multimeter is all you need to diagnose most problems around the house. Starting with the simplest, most basic test, use the voltage mode on your meter to check battery. Successful completion of tasks covered in the textbook can be documented by a certificate of completion included in the textbook. Jul 06, 2018 multimeter basics for automotive use hagerty diy. This digital insulation camp meter is a handheld 6000count instrument that is designed for use in the laboratory, field servicing, at home, and any circumstance. Jul 31, 2018 under this category, the digital multimeter mimics the behavior of an ammeter as it is used to measure current. The basecollector junction is one diode and the baseemitter junction is the other. Aug 09, 2012 a multimeter can be used to measure voltage, current, resistance, continuity and other parameters. Sperry instruments dm6400 operating instructions manual pdf. February 21, 2018 equipment, the digital multimeter is used to measure voltage, current, and resistance. Pdf download feb 26, 2018 digital multimeters dmm, once called voltmeters, have been described as the tape measure for engineers in the new millennium.
You can find fluke digital multimeters with advanced features for measuring pressure, humidity, temperature, frequency and duty circle. Smathers hunker may earn compensation through affiliate links in this story. A digital multimeter is a musthave for any toolbox, but theres a learning curve involved. View and download sperry instruments dm6400 operating instructions manual online. A multimeter is an indispensable tool for working with electronics, and can give you a better idea of whats going on inside your circuits. How to use a multimeter beginners guide random nerd.
A fluke digital multimeter features a large display screen and different collaboration functions. This small, lightweight multimeter fits comfortably in your hand. Our dmm adopt rotational switch which situated at the middle of the front cases. Jul 29, 2015 one of the most important step of progressing in diy electronics work is knowing to use a multimeter. The video below shows a multimeter being used to measure voltage from batteries dc direct current voltage and the resistance of some resistors.
How to use digital multimeter pdf books quranmualim learn. A digital multimeter is an essential tool in every electronic enthusiasts arsenal. A digital multimeter can be used as a fast and simple way to check a transistor for open or shorted junctions. In this beginners guide, weve shown you how to use a multimeter. Here, we discuss basic multimeter functions, performing basic tests, understanding symbols used in readouts, and features found on 3 typical units of various price points. Proper dmm usage when taking basic measurements can help prevent injury to personnel and costly damage to equipment. Simple instructions on how to use a digital multimeter our. A typical multimeter can measure voltage, current, and resistance.
If youre looking to use your digital multimeter for a specific purpose, make sure you. The digital multimeter dmm is an extremely versatile tool for troubleshooting. Current, voltage, resistance, and power are the four basic properties of electrical circuits. The agilent 34401a is capable of making highly accurate measurements. What to look for in a multimeter and how to use a multimeter to measure voltage, current, resistance and continuity. It is a combination ohmmeter, voltmeter, and milliammeter. Some can measure temperature, perform diode tests, or measure specifics about car engines. How to use the digital multimeter dt9205a by michael o. When making measurements with a digital multimeter, it is important to remember that. A good meter measures ohms, ac volts, dc volts, and ac and dc amperes at least up to 300 milliamperes, as well as provides a continuity tester audible that measures continuity within. This widelyused textbook is part of a comprehensive instructional program that includes everything needed to train technicians in the safe operation of digital multimeters dmms. Posted by rich mcfadden on jan 21, 2016 rich mcfadden is the global manager of product innovation at fluke corporation.
How to use a digital multimeter what is a multimeter. Multimeters are a tool that we use to measure multiple characteristics of electronics. Introduction to the basics of digital multimeter calibration ondemand webinar. The standard and basic measurements performed by multimeter are the measurements of amps, volts, and ohms. The most basic things we measure are voltage and current. To accomplish this, insert the red probe of the multimeter to one of the current measuring sockets.
It comes handy when measuring electrical resistance and voltage. They are available in two varieties, analog and digital. This series are a series of compact pocketsized 312 digit multimeter for measuring dc and ac voltage, dc and ac current, resistance, temperature, transistor. For this test, you can view the transistor as two diodes connected as shown in below figure for both npn and pnp transistors.
Jul 31, 2018 digital multimeter is a test equipment which offers several electronic measurement task in one tool. Summary of contents1 fluke multimeter user manual2 klein multimeter user manual3 mastech multimeter user manual4 craftsman multimeter user manual5 amprobe am530 multimeter user manual6 fieldpiece hs33 multimeter user manual7 tacklife cm02a multimeter user manual8 uei test instruments dl369 multimeter user manual9 extech ex330 autoranging mini multimeter user manual10 etekcity msrc600 digital. How to use digital multimeter pdf books quranmualim. Home technical articles basic measuring of resistance, voltage and current using digital multimeter few words about digital multimeter digital multimeter has generally replaced the analogtype multimeter as the test device of choice for maintainers because they are easier to read, are often more compact and have greater accuracy. Proper dmm usage when taking basic measurements can help prevent injury to personnel and costly. Power dissipation effects when measuring resistors designed for temperature measurements or other resistive devices with large temperature coefficients, be aware that the multimeter will dissipate. A digital multimeter much like an analog meter, it is able to read voltage, current, and resistance. Step 3 the next step is to turn the multimeter on my. Most meters will start at 200 millivolts and go up to 600 volts.
Digital multimeter this is probably the most useful instrument in an electricians toolbox. Not every digital multimeter will have the same features. Voltage measurements are made with the test leads connected in parallel. Multimeter basics for automotive use hagerty diy youtube. A multimeter is an essential tool in any electronics lab. Simple instructions on how to use a digital multimeter. Pdf astroai am33d digital multimeter tutorial start.
Charles platt is a contributing editor to make magazine. It is also known as the voltmeter or ohm meter or volt ohm meter. Digital multimeter basics rating and reading of all functions of a multimeter are displayed on the display screen in digital form which are more accurate and can be easily read by users. Using digital technology, it can make very accurate measurements and many of these test instruments can make a host of measurements beyond the basic amps volts and ohms of the analogue test meters.
View and download the gadget queen dt830b user manual online. Modern multimeters can also be used to measure the frequency, c. Digital multimeter principles covers the topics needed to train technicians in the safe operation of digital multimeters dmms. Youve learned how to measure voltage, current and resistance, and how to check continuity.
Digital multimeter working principle electrical academia. Prepare to dive into electrical projects by getting familiar with a multimeter. A digital multimeter or dmm is one of the most widely used pieces of test equipment today. Previously, we have talked about the theoritical basics about a typical multimeter and in this multimeter guide for dummies we will learn how to use a multimeter for diy electronics works as well as in everyday life. Digital multimeters dmm, once called voltmeters, have been described as the tape measure for engineers in. The dt9205a multimeter offers you several amplitudes of measurement with which to test electrical components for voltage, resistance or continuity. Digital multimeters all digital multimeters combine the features of an ammeter, a voltmeter, and an ohmmeter. The digital multimeter, or dmm is now the most widely used form of multimeter.
If youre looking to use your digital multimeter for a specific purpose, make sure you buy one that serves that same purpose. How to use a multimeter for dummies your garage guide. Digital multimeters are very versatile test instruments. The oscilloscope is arguably one of the most useful general purpose tools ever created for use by electronic engineers. Digital multimeter tutorial a digital multimeter dmm is an electrical measurement instrument that can be used to troubleshoot a wide range of electrical problems. Aug 24, 2017 how to use a multimeter for beginners. Connect the multimeter to the decade resistance box. Using digital technology, it can make very accurate measurements and many of these test instruments can make a host of measurements beyond the basic. Apr 04, 2016 a multimeter is an indispensable tool for working with electronics, and can give you a better idea of whats going on inside your circuits. This tutorial will show you how to use a digital multimeter dmm, an indispensable tool that you can use to diagnose circuits, learn about other peoples electronic. How to use a multimeter beginners guide measuring volts. We are taking that the user is using a very basic digital multimeter.
When working with the scalable digital multimeter you need to have an idea of the value of voltage, current, or resistance that you are attempting to measure. These tutorials describe common errors found in measurements and. Multisim tutorial michigan technological university. When used to measure voltage, the multimeter is called a voltmeter and it measures the potential difference across two points in s. How to use digital multimeter pdf books quranmualim, digital multimeter pdf, multimeter parts and function pdf, types of multimeter pdf. A digital multimeter dmm may look complicated and intimidating at first glance, but once. Analog versions are cheaper to buy and are fine for establishing a current, but if you need a level of accuracy, a digital version is much. The digital multimeter basics course includes references to basic electrical theory, explanations, and other supporting resources or content contained in the free fluke electrical measurement safety online course. The first step to take is to connect the negative probe into the com port of the multimeter step 2 the following step is to connect the positive probe lead to the fused v. Since its invention more than 100 years ago, new types, features and functionalities have been introduced. In this video i go through the basic functions of a cheap multimeter, i cover how to measure ac and dc voltage, how to measure resistance, how to.