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. A step by step guide this course will give you everything you need to start playing with electronics components and fix electronic devices. Inspect the test leads before using to make sure there are no breaks or shorts. A multimeter or a multitester, also known as a vom voltohmmilliammeter, is an electronic measuring instrument that combines several measurement functions in one unit. Multimeter has multi functionalities like, it acts like ammeter, voltmeter and ohmmeter. If you disconnect the multimeter, your circuit wont work. How to check electronics parts using a multimeter our. Multimeter test leads with banana plug digital multimeter clamp tester probe test probes leads for multimeter electronic test leads multimeter accessories 20a especially sharp model by huasoet. Advanced ones check properties such as capacitance and transistor gain, but even the most basic ones are able to measure resistance, voltage and current.
A digital multimeter can be used as a fast and simple way to check a transistor for open or shorted junctions. Once, only professional electricians and devoted hobbyists could afford a good multimeter. How to use a digital multimeter tutorial australia. Voltage measurements are made in parallel or across a battery or component in a circuit. Digital multimeters are available at mouser electronics from industry leading manufacturers. With more and more everyday items adding electronics and electrical features, the ability to measure. We use dmms to take electrical measurements in a fast and relatively accurate way. Always use a power switch to remove power when building circuits. Multimeters are instruments that allow the user to test or measure electronic components. Its probably not new to you, but sometimes we want to analyze a powered circuit with a multimeter. Again the test using a multimeter only provides a confidence check that the bipolar transistor has not blown, but it is still very. The gmm supplies a sinewave of voltage to the component under test and then plots the voltage vs current relationship on the display.
Before measuring the current, be sure that youve plugged in the red probe in. It can also indentify livewire, it is an ideal tool for electricians work. We do resistance checks using an ohmmeter, voltage checks using a voltmeter, and capacitance checks using a capacitor meter. The ohmmeter is an instrument designed to indicate resistance directly in. It is a handheld device with positive and negative indicator needle over a numeric lcd digital display. Testing electrical systems with a digital multimeter. The capacitor stores energy in an electrical field, the inductor stores energy in a magnetic field, and a resistor increases the. Aug 09, 2012 the multimeter on the current setting which makes it into an ammeter is said to be connected in series in the circuit. How to test a capacitor learning about electronics. Aug 14, 2016 a digital multimeter can be used as a fast and simple way to check a transistor for open or shorted junctions. How to test electronic components with a multimeter our. The power onoff switch on the multimeter does various tasks. Current measurement using multimeter electronics hub.
Every fixer should know their way around a multimeter, which has just north of a zillion uses for testing electronic components and circuits. So we cannot process or ship any order untill 3rd may. When making measurements with a digital multimeter, it is important to remember that voltage measurements are made with the test leads connected in parallel, and current measurements are made with the test leads connected in series. For this purpose, we have started a multimerer tutorial where we will use dmm digital multimeter and avo meter amperevoltageresistance meter or multimeter digitalanalog to test different electrical electronics devices, instruments and components to find their terminals and condition such as are are they short, open, good or faulty. Diode test using a multimeter how to test a transistor with a multimeter. Pdf new digital multimeter for accurate measurement of. This multimeter is connected inline with the wire or component by breaking circuit a part to measure the. The standard and basic measurements performed by multimeter are the measurements of amps, volts, and ohms. Aug 23, 2017 hello friends in this vedio i explained how to check electronics components with digital multimeter in this vedio i explained about diode, resistor, transister and capacitor in next vedio i will. For this purpose, we have started a multimerer tutorial where we will use dmm digital multimeter and avo meter amperevoltageresistance meter or multimeter digital analog to test different electrical electronics devices, instruments and components to find their terminals and condition such as are are they short, open, good or faulty.
Resistance measurements must be made with the current off. Full text of testing electronic components by colin mitchell. Tweezers are handy if you are needing to test smd components. Use mydaq digital multimeter dmm to test mysnap components if they appear to be damaged or not working properly. In this learning activity youll explore the functions and proper operation of a digital multimeter. The general usage of the meter is covered along with examples of taking readings on multiple items such as resistors, continuity. How to check electronics parts using a multimeter our pastimes. Advantages of a digital multimeter are its output display which directly shows the measured value, high accuracy, ability to read both positive and negative values.
Digital multimeters are widely used portable measuring instrument which has the advanced features than analog meters such as auto polarity, auto zeroing, auto ranging and automatic shut off. Multimeters can be used for testing batteries, household wiring, electric motors and power supplies. We show in this article how all these tests can check whether a capacitor is good or not. Today, digital multimeters and analyzers are often inexpensive and easy to use. Ujt uni junction transistor can be easily tested by using a digital multimeter. Feb 19, 2018 electronic components testing using fluke 101 multimeter. Testing a transistor with a digital multimeter engineering. Using digital technology, it can make very accurate measurements and many of these test instruments can make a host of measurements beyond the. This is fairly detailed tutorial on using a digital multimeter.
Jul 31, 2018 digital multimeter is a test equipment which offers several electronic measurement task in one tool. It is that time of the year when we need to pay for web hosting and buy new components and equipment for new tutorials. Test each pair of leads both ways six tests in total. I first ordered one set to replace the leads on my multimeter because i needed to make measurements in electronic circuits i design. Follow along to master the three most basic functions of a multimeter. The baseemitter be junction should behave like a diode and conduct one way only. This digital multimeter is a generalpurpose instrument designed for use in general electronics, home electrical applications, and automotive electrical electronic systems.
Are there any best practices, dos and dont for using multimeters on circuits and components. I love to do that, but im a little worried that i might burn some components or the whole circuit. The basecollector junction is one diode and the baseemitter junction is the other. Using component test on the fluke 867b graphical multimeters. The number one mistake made when using modern multimeters is to try and. This compilation is not intended as a complete survey of the field of electrical and. Tpi 183 digital multimeter tpi 183 digital multimeter pnp test procedure connect the meter leads with the polarity as shown and verify that the base toemitter and base tocollector junctions read as a forward biased diode.
If you ever break a probe, they are cheap to replace. Digital multimeter dmm electronic volt ohm millimeter with digital display. This is an article showing a user how he can test a capacitor to see if it is good or defective. General guidelines always test the 3 before using it to make sure it is operating properly. Few things hurt your ego more than spendingan afternoon fighting your code,only to realize hours laterthat a bad component was causing all of your problems. An introduction to the digital multimeter by patrick hoppe. Comparison of digital and analog meter can be damaged when dropped from bench level no usually damaged by rough treatment pointer attempts to deflect to the left when the polarity is reversed. How to use a multimeter beginners guide random nerd. An introduction to the digital multimeter wisconline oer. Full text of testing electronic components by colin mitchell see other formats. 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. Digital multimeters dmm are a common measurement tool to test or troubleshoot a wide range of electrical issues.
Digital multimeter probe test leads, used in all types of digital multimeters. Analogue and digital multimeters have either a rotary selector switch or push buttons to select the appropriate function and range. Can i burn components short circuit by using a multimeter. Ask any field or bench technician what their mostused piece of test equipment is and they will probably say a dmm digital multimeter. Mt87 digital clamping type multimeter electronic tester clamp meter this mt87 mini multimeter can measure acdc voltage, ac current and resistance. The difference between the voltmeter and the test light is the multimeter provides the flexibility of measuring different voltages as well as being able to calculate voltage drops across components and circuits. Use eye protection when experimenting on your own circuits. The diode test using an analogue multimeter can be extended to give a simple and straightforward confidence check for bipolar transistors.
Bookmark file pdf testing electronic components with multimeter. Digital multimeter is a test equipment which offers several electronic measurement task in one tool. The digital multimeter, or dmm is now the most widely used form of multimeter. Throughhole soldering is needed to connect components to the board.
Basic current measurement tutorial using a digital multimeter for beginners in electronics. These versitiale devices can be used to test and diagnose a wide range of circuits and components. Testing electrical systems with a digital multimeter perhaps the most important tool youll use in troubleshooting auto electrical systems is the multimeter. Components are attached to a printed circuit board. Typical analog multimeter analog meters use a mechanical movement and are not suitable for measurements in circuits with sensitive electronic components. A typical multimeter can measure voltage, current, and resistance. The analog multimeter or vom voltohmmilliammeter is constructed using a moving coil meter and a pointer to indicate the reading on the scale. This compilation is not intended as a complete survey of the field of electrical and electronic equipment testing. Most production facilities have some qa processcomponents go through before they leave the factory,but bad components do slip through. A typical digital multimeter to use the method being described here. The multimeter acts as if it was a wire in your circuit. Holes go all the way through the board from one side to the other.
Digital multimeters dmm, dvom have a numeric display, and may also show a. The most basic things we measure are voltage and current. When using the meter it is possible to follow a number of simple steps. First steps in using a multimeter starting electronics. They may also be able to measure frequency and duty cycle a measurement relating. Sep 25, 2015 current measurement using digital multimeter. This meter is designed to test or measure ac voltage, dc voltage, batteries, dc current, ac current, resistance, diodes and continuity.
Component inside them are different because analog multimeter shows output in continuous form while digital multimeter shows output in digital form. Are more susceptible to damage from mechanical shock than are digital multimeters. Hello friends in this vedio i explained how to check electronics components with digital multimeter in this vedio i explained about diode, resistor, transister and capacitor in next vedio i will. Using component test on the fluke 867b graphical multimeters introduction the fluke 867b provides you with the unique ability to test electricalelectronic components in an unpowered circuit.
The reason we call it a multimeter is because they can take multiple types measurements of electrical properties within a circuit. We go through several different tests, all using a multimeter. I eventually ended up ordering 2 more sets after i received my linear power supply. There are dmms of all shapes and sizes each with their own specific functions. More advanced models can measure capacitance, inductance, and temperature. Testing my new digital multimeter zt101 6000 counts backlight acdc ammeter voltmeter ohm meter. Reverse the meter connections to the transistor and verify that both pn junctions do not conduct. Basic multimeters measures voltage, current and resistance, while more elaborate multimeters, such as the fluke 78, or fluke 88 have featues that can. A digital multimeter dmm is one of the most common tools on a makers bench. Please view our large selection of digital multimeters below. Mt87 digital clamping type multimeter electronic tester acdc. In a pinch, a dmm can even substitute for expensive, specialized test equipment. Digital multimeter probe test leads electron components. For this test, you can view the transistor as two diodes connected as shown in below figure for both npn and pnp transistors.
Analog multimeters use a microammeter with a moving pointer to display readings. How to check electronics components with digital multimeter. In this learning activity youll examine how electronic converters convert between analog voltages and proportional digital signals. Testing components electronic circuits and diagrams. A basic multimeter measures resistance, voltage and current. Insert the probes into the correct connections this is required because there may be a number of different connections that can be used. Using an analogue multimeter is just as easy as using a digital one, but a few differences will be seen. Three primary electronic components are used in circuits.
If you need to find out whether electronic components or circuits work, you can easily test them in your home with a multimeter. Mt87 digital clamping type multimeter electronic tester ac. To control the impact of the covid19 outbreak, indian gov. A multimeter is a handheld device that combines different electronic testing and measurement tools. It is also known as the voltmeter or ohm meter or volt ohm meter.
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