Most production facilities have some qa processcomponents go through before they leave the factory,but bad components do slip through. The most basic things we measure are voltage and current. How to check basic electronic components using a multi. Now connect both ends of resistor with the avo or digital multimeter terminals. A multimeter, also called a voltohm meter or vom, is a device that measures resistance, voltage, resistance, and continuity. The resistor is an electronic component that has electrical friction. If you continue browsing the site, you agree to the use of cookies on this website. Digital multimeter 1 how to use a multimeter guide id. The first describes the testing of various electronic components, assemblies, and systems. Multimeter combines the functions above with resistance and others to make a versatile piece of test equipment. Testing a diode with an analogue multimeter set the analogue multimeter to a low value resistance range such as. Check out this post for more info on how to use a multimeter.
Knowing the basics of using a multimeter will be a great help in your troubleshooting efforts. Analogue and digital multimeters have either a rotary selector switch or. How to check basic electronic components using a multimeter. At the very basic level you have the device itself, along with two probes, which are the black and red cables that have plugs on one end and metal tips on the other. Variable testing electronic components ebook is in pdf format. A directional wattmeter measures forward and reflected power. Set the functionrange switch to the appropriate resistance ohms range shown above. For this purpose, take avo meter or digital multimeter and select resistance in avo meterrotate the knob to the. To check if the resistor is in good condition or broken, we use a multimeter. A multimeter is an ideal piece of test equipment to help with fault finding an electronics transistor circuit. Testing electrical and electronics components and devices with multimeter. Component tester test almost anything being an electronics student or hobbyist, you may have thought of getting a tester that could test almost anything the electronics components, obviouslynow what if i tell you that you can have one and that. Join rae hoyt for an indepth discussion in this video, testing components with a multimeter, part of learning arduino.
The prices for low end multimeters can be as low as a few dollars, pounds or euros. When the digital multimeter window appears click on the run. Every fixer should know their way around a multimeter, which has just north of a zillion uses for testing electronic components and circuits. A multimeter or a multitester, also known as a vom voltohmmilliammeter, is an electronic measuring instrument that combines several measurement functions in one unit. Since voltage, current and resistance are related through ohms law, resistors are a good way to control voltage and current in your circuit. The gmm supplies a sinewave of voltage to the component under test and then plots the voltage vs current relationship on the display. Includes instructions with colour pictures that guide you through the building of a mono amplifier, sinewave oscillator, white noise generator and stereo headphone amplifier.
How to use a multimeter for starters, lets go over some of the different parts of a multimeter. Testing components electronic circuits and diagrams. 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. More advanced models can measure capacitance, inductance, and temperature. The internet also allows us easy interaction with other technicians around the world and manufacturers tech support to exchange ideas and information and.
Figure 1 low resistance pipe high resistance pipe rough walls low pressure high. The small capacitors usually used in electronics are often measured in microfarads and nanofarads. Nov 08, 2014 this video is about how to test simple components like resistors,capacitors, diodes, transformer, speaker, transistor, fuses etc with a multimeter. Ordinary diodes as wells as zener diodes can be checked by using a multimeter. Analog multimeters use a microammeter with a moving pointer to display readings. This friction opposes the flow of electrons and thus reduces the voltage pressure placed on other electronic components b y restricting the amount of current that can pass through it. Note the different length terminals on one of the capacitors. Test meters or multimeters are used everywhere from home workshops to high technology laboratories and by people who range from electronics enthusiasts to students, and service engineers to high technology development engineers. Throughhole soldering is needed to connect components to the board. Multimeter combines the functions above with resistance and. Basic electrical and electronic components passive devices devices or components which do not require external source to their operation. So, the tester has a set of digital drivers that it uses to drive the ic inputs to. Use the 2000k range when testing for resistanc e values in electronic components such as resistors and potentiometer. No matter what youre testing, the black test lead will always plug into the com terminal, and the red test lead will be the one to.
When youre testing components, always start with continuity. Some components can be electrically ok, but a voltage check can ensure it is mechanically ok. Pdf the use of digital multimeter tutorial instructional media has begun to be pdf. Multimeters are a tool that we use to measure multiple characteristics of electronics. A basic multimeter measures resistance, voltage and current. Clean the contacts with a small file and bend the metal strips to the contacts so. Jul 21, 2017 how to use a multimeter for starters, lets go over some of the different parts of a multimeter. Multimeter has multi functionalities like, it acts like ammeter, voltmeter and ohmmeter. Full text of testing electronic components by colin mitchell.
Dec 08, 2010 basic electronic components such as resistors, capacitors, diodes and transistors are widely used in any electronic devices and gadgets. Multimeters can be used for testing batteries, household wiring, electric motors and power supplies. Pick out a random resistor and set the multimeter to the 20k. Components are attached to a printed circuit board. Resistors a twoterminal passive component that opposes the flow of current reduces the electric current and at the same time lowers the voltage levels in a circuit. Motors, capacitors and power conversion equipment, such as variable speed drives, can be prime generators of spikes.
Clip it on your cars alternator wire and measure the charging current. How to test electronic components with a multimeter our. Basic electronics chapter 2, 3a test t5, t6 basic electrical principles and the functions of components figures in this course book are reproduced with the permission of the american radio relay league. A 0500 microampere meter movement with a resistance of 100 ohms is. How to test electronic components linkedin slideshare. Testing electronic components with a multimeter youtube. 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. If r4 is open, there is a good possibility that the failure was caused by a short circuit in q1. Multimeter test meters come in a variety of shapes sizes and they have differing degrees of functionality and performance. If you need to find out whether electronic components or circuits work, you can easily test them in your home with a multimeter. Computers and sensors operation,diagnosis, and service. Introduction to basic electronics, electronic components and projects.
Most digital multimeters have a fixed input resistanceimpedance of 10m no matter what scale is selected. They may also be able to measure frequency and duty cycle a measurement relating. Analogue and digital multimeter and how to use them like a professional. This pool of electrons is available for electronic components to use.
Almost all of our parts and service manuals and schematics pdf files are obtained via the internet. The internet also allows us easy interaction with other technicians around the world and manufacturers tech support to exchange ideas and information and even to file some of our warranty claims. This compilation is not intended as a complete survey of the field of electrical and electronic equipment testing. Digital multimeters dmm, dvom have a numeric display, and may also show a. Wattmeter a device that measures power coming from a transmitter through the antenna feed line. Just like with resistance testing, youll need to manually set the expected range and make sure both the multimeter can handle the maximum expected voltage. Set a digital multimeter to diode test and an analogue multimeter to a low resistance range such as. It is a handheld device with positive and negative indicator needle over a numeric lcd digital display. A typical multimeter can measure voltage, current, and resistance. The test meter or multimeter is one of the most flexible items of test equipment. Assembling and testing electronic circuits sempeo236 assembling and testing electronic circuits 6 additional information.
Basic electronic components such as resistors, capacitors, diodes and transistors are widely used in any electronic devices and gadgets. How to use a multimeter for electronic testing a leading cause of failure in fitness equipment is insufficient power to the internal components of a machine or no power at all. These types of problems are common in electronic circuits. Testing components with a multimeter linkedin learning. Each lesson consists of an overview, a list of study.
How to test electronic components slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Notice all of the chips,resistors,and capacitors that are used in this computer. Holes go all the way through the board from one side to the other. A threerange milliammeter, a threerange voltmeter with a sensitivity of 2,000 ohms per volt, and a tworange ohmmeter are combined in this circuit. Wattmeters generally are useful in certain frequency ranges. The demand for manual magneto switchboards has increased considerably during. Full text of testing electronic components by colin mitchell see other formats. These boards are essential for testing and prototyping circuits because no soldering is needed. How to test electric components with a multimeter freds. The activities will include the assembly of a range of electronic components such as resistors fixed and variable, capacitors fixed and variable, diodes. See more ideas about electrical projects, diy electronics and electronics projects. There are lots of faults and components that you cannot test with test equipment because they are either intermittent or the equipment does not load the device to the same extent as the circuit. Using component test on the fluke 867b graphical multimeters. Computers and sensorsoperation,diagnosis,and service 593 figure 253 many electronic components are used to construct a typical vehicle computer.
How to use a multimeter learn at sparkfun electronics. Component inside them are different because analog multimeter shows output in continuous form while digital multimeter shows output in digital form. A beginners guide part 2 hobby circuits for beginners. Abcs of multimeter safety multimeter safety and you voltage spikesan unavoidable hazard as distribution systems and loads become more complex, the possibilities of transient overvoltages increase. 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. Three primary electronic components are used in circuits. Component tester test almost anything being an electronics student or hobbyist, you may have thought of getting a tester that could test almost anything the electronics components, obviouslynow what if i tell you that you can have one and that too made by yourself under inr 600 on. Then hold the probes against the resistor legs with the same amount of pressure you when pressing a key on a keyboard. Often circuits like transistor radios fail after they have been used for many years, and it is useful to be able to mend them also when constructing equipment, circuits do not always work first time and it is necessary to faultfind. And secondly you need both an analogue multimeter and a digital meter to cover all the situations. Knowing how to conduct a test on this components using a multimeter would give you an idea on how to trouble shoot and repair any defective cellphones or electronic equipments at home. But these components aid the active components in functioning. To read the rest of the chapter of testing electronic components 179 pages plus getting the 7 bonuses please visit. In testing components how to test a diode diodes are one of the components that can be tested very easily.
Electronic components generally electronic components are classified into passive components passive components are the components, they themselves are not capable of processing an electrical signal such as amplification, oscillation, modulation etc. Touch the test leads to the resistor or nonenergized component to be measured. This ebook is written for beginners, hobbyist, technical collegeuniversity students and for those who have an interest in electronics or even seasoned electronic repairers i have spent countless hours testing and analyzing electronic components and found out the right and accurate ways to test them. A multimeter is a handheld device that combines different electronic testing and measurement tools. Figure 254 typical ignition timing map developed from testing and used by the vehicle computer to provide the. The capacitor stores energy in an electrical field, the inductor stores energy in a magnetic field, and a resistor increases the. 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. A digital multimeter has a set of digits on the display and an analogue multimeter has a scale with a. How to use a multimeter for electronic testing sportsmith blog.