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Como usar un Multímetro

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  1. Como usar un Multímetro, Probando la Continuidad: paso 1, imagen 1 de 1
    • Una prueba de continuidad nos dice si dos elementos están conectados eléctricamente: si algo es continuo, una corriente eléctrica puede fluir libremente de un extremo al otro.

    • Si no hay continuidad, significa que hay una ruptura en algún lugar del circuito. Esto podría indicar cualquier cosa, desde un fusible fundido o mala unión de soldadura a un circuito mal conectado.

    • Una prueba de continuidad es una de las pruebas mas útiles para reparar electrónicos.

  2. Como usar un Multímetro: paso 2, imagen 1 de 3 Como usar un Multímetro: paso 2, imagen 2 de 3 Como usar un Multímetro: paso 2, imagen 3 de 3
    • Para empezar, asegúrese de que no circula corriente por el circuito o componente que desea probar. Apáguelo, desenchúfelo de la pared, y retire las baterías.

    • Conecte la sonda negra en el puerto COM en su multímetro.

    • Conecte la sonda roja en el puerto marcado con un símbolo V (en este caso, el puerto derecho).

    Why do we need to make sure that no current is running through the circuit?

    When there is another parallel branch with 24VDC power and 4-20mA output, the value of the resistance measured comes as zero. Whats the reason?

    Fraz - Contestar

    The way that a meter measures resistance is by sending a small current across the probes and then measuring the resulting voltage. So, another current will disturb your digital multimeter's (DMM) reading.

    nicO -

  3. Como usar un Multímetro: paso 3, imagen 1 de 1
    • Enciende el multímetro, y ponga el selector de modo de continuidad (indicado por un icono que se parece a una onda de sonido).

    • No todos los multímetros tienen un modo de continuidad dedicado. Si la suya no tiene, está bien! Vaya al paso 6 para una forma alternativa de realizar una prueba de continuidad.

    I want to search the resistance of gold and see if I have some

    Joel Stegner - Contestar

    What does a sound wave look like?

    Greg Janssen - Contestar

    Gold is highly conductive near zero resistance which is why they use it in conducters. Use "specific gravity" type tests or "mass spectromatry" type tests for elements.

    Sound looks like sine waves with various amplitudes and cycles per unit of time.

    MidnightWolf - Contestar

  4. Como usar un Multímetro: paso 4, imagen 1 de 2 Como usar un Multímetro: paso 4, imagen 2 de 2
    • El multímetro prueba la continuidad mediante el envío de un poco de corriente de la propia pila del multimetro a través de una sonda, y comprueba si la otra sonda la recibe.

    • Si las sondas están conectadas, ya sea por un circuito continuo, o tocando directamente entre sí, la corriente de prueba fluye a través de ellas. La pantalla mostrará un valor de cero (o casi cero), y el multimetro pitará.¡Hay Continuidad!

    • Si no se detecta la corriente de prueba, significa que no hay continuidad. La pantalla mostrará 1 u OL (bucle abierto).

  5. Como usar un Multímetro: paso 5, imagen 1 de 2 Como usar un Multímetro: paso 5, imagen 2 de 2
    • Para completar la prueba de continuidad, coloca una sonda en cada extremo del circuito o componente que desea probar.

    • Al igual que antes, si el circuito es continuo, la pantalla mostrará un valor de cero (o casi cero), y el multímetro pitará.

    • Si la pantalla muestra 1 o OL (lazo abierto), no hay continuidad, es decir, no hay camino para que la corriente eléctrica fluya de una sonda a la otra.

    • La continuidad no es direccional, lo que significa que no importa donde vaya cada sonda. Pero hay excepciones, por ejemplo, si hay un diodo en su circuito.Un diodo es un componente electrónico que deja pasar la corriente en una sola dirección, lo que significa que mostrará continuidad en una dirección, pero no en la otra.

    • Para revisar esto, invierte lo que están tocando las sondas y checa la continuidad. Si el multímetro muestra continuidad, lo más posible es que sea un diodo.

  6. Como usar un Multímetro, Probando la continuidad (método alternativo): paso 6, imagen 1 de 2 Como usar un Multímetro, Probando la continuidad (método alternativo): paso 6, imagen 2 de 2
    • Si el multímetro no tiene un modo de prueba de continuidad dedicado, aún puede realizar una prueba de continuidad.

    • Gira el selector al modo de resistencia.

    • Si en tu multímetro el rango es manual, colócalo la resistencia en el modo más bajo.

    • La resistencia se mide en ohmios, indicado por el símbolo Ω.

  7. Como usar un Multímetro: paso 7, imagen 1 de 2 Como usar un Multímetro: paso 7, imagen 2 de 2
    • En este modo, el multimetro envia un poco de corriente por una sonda y mide lo que es recibido por la otra sonda.

    • Si las sondas son conectadas—ya sea por un circuito interrumpido, o por directamente tocando las dos sondas—la corriente de prueba fluye a traves de las dos sondas. La pantalla demuestra un valor de 0 (o casi cero—en este caso, 0.8). Una resistencia baja es otra manera de decir que tenemos continuidad.

    • Si ninguna corriente es detectada, eso significa que no hay continuidad. La pantalla demostrara 1 u OL (open loop).

    You mentioned that if your meter screen displays 1 or OL

    But what happen if it shows other numbers

    Like 5.5 or somewhat?

    ddplc - Contestar

    It means you have current flowing which would indicate a good path or circuit. Also means you have a power supply connected which I think was mentioned earlier in the article to disconnect all power supplied, as in a.c., d.c. Especially in a vehicle as running tests on computer module circuits with the vehicle battery connected can damage a computer module circuit..

    Henry DeVito - Contestar

    I'm very pleased to have discovered these directions. Interestingly, I tried the two probes on different sections of a screwdriver – resistance showed very high. Is that possibly because of chrome coating on the screwdriver?

    James O'Neil - Contestar

    May not be a chrome coating at all even if it looks like it. The screw drivers "resistence" is the result of what alloys are used in the shank of the screw driver ... ie ... tin, zinc, carbon, etc.

    MidnightWolf - Contestar

  8. Como usar un Multímetro: paso 8, imagen 1 de 2 Como usar un Multímetro: paso 8, imagen 2 de 2
    • Para completar tu prueba de continuidad, pon una sonda en cada lado del circuito o componente que queries probar.

    • No importa donde coloques cada sonda;la continuidad no és direccional.

    • Como antes, si su circuito es continuo, la pantalla mostrará un valor de zero (o casi zero).

    • Si la pantalla muestra 1 u OL (open loop), no hay continuidad—es decir, no hay camino para que la corriente fluya de una sonda a la otra.

    What does it mean when I first get 1 then the meter jumps to all kinds of numbers and there is no beeping?

    Choymae Huie - Contestar

    Most likely you have bad contact with whatever you are measuring.

    MidnightWolf - Contestar

  9. Como usar un Multímetro, Midiendo voltaje: paso 9, imagen 1 de 3 Como usar un Multímetro, Midiendo voltaje: paso 9, imagen 2 de 3 Como usar un Multímetro, Midiendo voltaje: paso 9, imagen 3 de 3
    • Los siguientes cuatro pasos mostrarán como medir voltaje.

    • Conecta la sonda negra en el puerto COM en tu multímetro.

    • Conecta la sonda roja en el puerto marcado con un símbolo V (en este caso, el puerto derecho).

  10. Como usar un Multímetro: paso 10, imagen 1 de 2 Como usar un Multímetro: paso 10, imagen 2 de 2
    • Enciende tu multimetro y coloca el dial al modo de voltaje DC (indicado por una V con una linea recta, o el simbolo ⎓).

    • La mayoria de los dispositivos electronicos de consumidores utilizan voltaje DC(corriente contínua).El Voltaje AC(corriente alterna)—és el tipo de corriente de baja tensión que corre por la instalación de su casa —y es considerablemente más peligrosa y está fuera del alcance de esta guia .

    • La mayoria de multimetros no son auto-oscilantes, eso significa que tendras que establacer el rango correcto para el voltaje que deseas medir.

    • Cada ajuste en el dial demuestra el voltaje maximo que puede medir. Por ejemplo, si anticipas medir mas de 2 voltios pero menos de 20, utiliza el ajuste de 20 voltios.

    • Si no estas seguro, empieza con el ajuste maximo.

  11. Como usar un Multímetro, Midiendo voltaje en el rango-automático: paso 11, imagen 1 de 2 Como usar un Multímetro, Midiendo voltaje en el rango-automático: paso 11, imagen 2 de 2
    • Si tu multímetro tiene rango automático, salta al siguiente paso.

    • Coloca la sonda roja en la terminal positiva y la sonda negra en la terminal negativa. El multímetro mostrará el voltaje medido.

    • Invertir las sondas no hará daño; solo dará una lectura negativa.

    • Salta el siguiente paso, el cual muestra como medir voltaje usando multímetro de rango manual.

  12. Como usar un Multímetro, Medición de voltaje en rango manual: paso 12, imagen 1 de 3 Como usar un Multímetro, Medición de voltaje en rango manual: paso 12, imagen 2 de 3 Como usar un Multímetro, Medición de voltaje en rango manual: paso 12, imagen 3 de 3
    • Sigue esta paso para medir voltaje con un multímetro de rango manual.

    • Coloca la sonda roja en la terminal positiva y la sonda negra en la terminal negativa.

    • Si tu rango lo seleccionaste muy alto, puede que no consigas una lectura muy precisa. Aquí el multímetro lee 9 volts. Esta bien, pero podemos girar el selector a un rango menor para ser más precisos.

    • Si seleccionas el rango muy bajo, el multímetro solo lee 1 o 0L, indicando que esta sobrecargado o fuera de rango. Esto no dañará el multímetro, pero necesitamos ajustar el selector a un rango más alto.

    • Con el rango seleccionado correctamente, obtenemos una lectura de 9.42 volts.

    • Invertir las sondas no hará daño; solo da una lectura negativa.

  13. Como usar un Multímetro, Midiendo resistencia: paso 13, imagen 1 de 3 Como usar un Multímetro, Midiendo resistencia: paso 13, imagen 2 de 3 Como usar un Multímetro, Midiendo resistencia: paso 13, imagen 3 de 3
    • Los siguientes tres pasos te mostrarán como medir resistencia con tu multímetro.

    • Para empezar, asegúrate que no haya corriente fluyendo en el circuito o componente que quieres medir. Apágalo, desconéctalo de la pared y retira las baterías.

    • Recuerda que estas midiendo la resistencia del circuito entero. Si quieres medir un componente individual como una resistencia, mídelo por su cuenta—¡no cuando este soldado!

    • Conecta la sonda negra en el puerto COM de tu multímetro.

    • Conecta la sonda roja en el puerto marcado con un símbolo Ω (en este caso, el puerto derecho).

    Be careful when testing ohms on the circuit board, the best test is to remove the part so you are only testing the part not the circuit around the part. Transistors, resistors, caps need to be removed or at best one leg of the part. One time I had a burn open resistor, then I tested the resistor with my Ohms test I got some resistor reading. This was caused by back feed in the circuit.

    John E Reese - Contestar

  14. Como usar un Multímetro: paso 14, imagen 1 de 2 Como usar un Multímetro: paso 14, imagen 2 de 2
    • Enciende tu multimetro y ajusta el dial al modo de resistencia.

    • La resistencia se mide en ohmios, indicado por el simbolo Ω.

    • El multímetro de iFixit es de rango automático, lo que significa que automáticamente determinará el mejor rango de medición.

    • Si tu multímetro es de rango manual, necesitarás seleccionar el rango correcto para la resistencia que esperas medir. Si no estas seguro, empieza con la configuración mas alta.

  15. Como usar un Multímetro: paso 15, imagen 1 de 2 Como usar un Multímetro: paso 15, imagen 2 de 2
    • Pon una sonda en cada fin del circuito o componente que deseas probar.

    • No importa donde coloques cada sonda;la resistencia no es direccional.

    • Si tu multímetro no es de rango manual:

    • Si tu multímetro lee cerca a cero, el rango está ajustado demasiado alto para obtener una medida buena. Gira el dial a un ajuste mas bajo.

    • Si ajustas el rango muy bajo, el multimetro simplemente mostrara 1 u OL, indicando que esta sobrecargado o fuera de rango. Esto no dañara el multimetro, pero si necesitamos ajustar el dial a un rango mas alto.

    • La otra posibilidad es que el circuito o componente que estas probando no tiene continuidad—es decir, tiene resistencia infinita. Un circuito sin continuidad siempre leera 1 u OL en una prueba de resistencia.

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Jeff Suovanen

Miembro Desde 08/06/13

428,098 Reputación

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iFixit Miembro de iFixit

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135 Miembros

16,817 Guías creadas

132 comentarios

EASy and helpful indeed

Trever Mazibuko - Contestar

Thank you! Never find instructions so easy to follow.

kuruvar - Contestar

Iwant to know hw to test caperstas

kapambwe sikazwe -

Great stuff!! Thank you.

warwick - Contestar

Super guide, many thanks for posting!

Alan - Contestar

Thank you. Very easy and good training

Badar Omar - Contestar

Very helpful for beginners, thanks for these clear instructions!

AndyBlaser - Contestar

great article. thanks

James Magenga - Contestar

thank you !!! for this info!!!

Sufian Hamouda - Contestar

i did not know i can do this.

jeez - Contestar

Thanks a lot this is very clear and helpful!

dillinger0893 - Contestar

Thanks Jeff. I just purchased a cheap mm. All instructions were in Chinese. Your help made sense of it all, so easy.

David Bennet - Contestar

Iwant to knw hw to test power suply

kapambwe sikazwe - Contestar

great, thank you for good description.

hzaim2001 - Contestar

Brilliant thank you

Liam Breen - Contestar

It takes an intelligent person to write simple instructions. BRAVO !

dave - Contestar

so nice Bro...Thanks a lot...

akramul haque apollo - Contestar

Love the resources on the Pro site.

Shane Blanchett - Contestar

Very good instructions

Md Kamruzzaman - Contestar

Nice guide.pl add some additional examples to have better understanding for beginners.Thank you

sugashankar - Contestar

Nice guide. Pl add some additional practical examples. Thank you.

sugashankar - Contestar

I'm doing exactly this and mine won't read any voltages, but it will read resistance. I've tested it with multiple batteries that I know work, but I only get a read of 0. What might be the problem?

Juan Partida - Contestar

Very good lesson, helped a lot. Thankyou

mark cole - Contestar

This is the best and easiest lesson on using multimeter. Thanks a lot!

Seong Lee - Contestar

Thank you, Haven't used one of these is ages; this was a great refresher!

GON Compactor - Contestar

thanks for a very easy tutorial, it is very helpful!

bonjie montaflor - Contestar

The basics. Soooo important. Well done, short and concise.

chris teter - Contestar

Nice and straightforward guide - thanks buddy.

Mel Gavin - Contestar

Most helpful thank you!

jodianderson34 - Contestar

Had multimeter for a couple years, never knew how to make it beep!

Mike Weatherl - Contestar

Thank you for these great instructions. The instructions that came with the multimeter were not helpful for a beginner, and these really helped us diagnose our problem.

Roger Lemaster - Contestar

Thank you for the great instructions. My question and the reason for my looking online for info on using a multimeter was to find out what the various resistance readings mean on a digital tester. I am checking out a defrosting element in my refrigerator and got a reading of 12 or 15 ohms. The information I was reading said a 15-100 ohms meant the element was OK, another book said if medium resistance was found it was OK.

By going online I was looking for the answer as to what is low, medium and/or high resistance ranges are.

I did enjoy your instructions, they were easy to understand.

JM - Contestar

I have used a meter for a long time. Never had instructions so clear and easy to follow. Thank you very much.

The pictures are also very clear and helpful.

Rick Lewis - Contestar

Beautifully put. I truly appreciate the lesson. I've learned something of impirtance. Thank you.

rickeybenn - Contestar

it really useful for begginer

erwin torres - Contestar

Thanks you for the lesson :)

Mark Diamond - Contestar

Hi,

das ist wirklich sehr anschaulich aufgebaut und benutzerfreundlich, vielen Dank dafür!

Wer jetzt noch genau wissen möchte wie Multimeter funktionieren und worauf Sie beim Kauf achten sollte der kann gerne noch auf https://multimeter-tester.de schauen und weiter lesen.

Ich wünsche euch noch einen schönen Abend und einen bestmöglichen Start ins neue Jahr.

LG

multimeter_tester - Contestar

Thanks you for the lesson :)

mrmannan05 - Contestar

A great introduction for a beginner like me.

Joe - Contestar

Hello . and thank you good read.

conrad - Contestar

Easy to understand...thank you

chip - Contestar

Thanks and had help me a lot

sinoncesar - Contestar

Had help me a lot. Many Thanks

sinoncesar - Contestar

Thanks, I think I've got it.

rama jama - Contestar

Simple and precise. A life saver as I couldn't find the "manual" - one page sheet. Greatful!

rudy2828 - Contestar

Wow I love this I can now read a resistor thanks keep on the good work

Adeyefa - Contestar

Great stuff this was helpful.

joel7269 - Contestar

Thanks , sometimes need too refresh with the basics.

Kurt Webster - Contestar

It is very nice demostration

Lokesha - Contestar

Sir can i get a book about basics of auto electrical and electronics or soft copy.

Lokesha - Contestar

Very informative! Easy to understand.

David Flatt - Contestar

Simple and easy thanks

kudakwashekatena - Contestar

I have been searching a tutorial on getting started with trouble shooting an automotive parasitic draw. I have no background in different types of functions of a mmeter such as continuity, voltage, and resistance, your tutorial was a must have. It gave me an understanding of just the basic terminology of the more advanced tutorials. I give it a major thumbs up, excellent tutorial thanks a million !!!!!!

camotrucker87 - Contestar

Easy to follow description. However, I am having trouble diagnosing a microwave diode. Seems I can't do that directly with a multimeter. Is that correct?

Rose - May 9, 2017

rakile - Contestar

Thank you, the instructions that came with my multi meter were clear as mud. Your mini course was very clear and concise.

t_wellman - Contestar

Thank you. This was very helpful to me. Very clear and easy to understand....

John Cascella - Contestar

Thank you so much, it is so easy to understand the way you explain.

nodzgreat - Contestar

thankyou very much.

keith - Contestar

Thanks for supportive/useful post

Suman Ponmathan - Contestar

Very Helpful.,thanks

Rey Mombay - Contestar

Excellent please give us more of the same, primarily to help with understanding of the subject matter at a basic level.

mike payne - Contestar

Excellent and elegantly simple guide.

Stewart Shackleton - Contestar

Thanks you so much for this.For me as a beginner,I didn't find difficulties in reading this but its fruitful one.

Jhed Saldavia - Contestar

It was just awsome.Before your tutorial it just was looked like some alien device to me and now I think it's having very simple working principle. I am now pretty confident to work with it. A very big thanks.

Biswarup Majumdar - Contestar

Indeed awesome. Lots of thanks for such a generous sharing of knowledge. Be blessed

prince - Contestar

very helpful,thanks

silvester - Contestar

very simple and accurate

daniel - Contestar

Awesome thanks.. I knew you could use this for a lot of things but not this much.

Lynn Comstock - Contestar

I have a problem with my multimeter (Mastech MY74), the first thing I did was stupid, haven't read the user manual and tried it on a live socket and now it doesn't want to work. I have changed the fuses (600V, 0,4A and 10A), but it still doesn't work. Does anyone have an idea what else could have went wrong and how to test it?

Best regards

Rebius Noir - Contestar

Very useful. I liked the statements like ‘this will not harm the multimeter but will show negative reading ‘. For non science folks like me, these questions crop up often so this guide takes away the anxieties.

Ninad Kajale - Contestar

Nice article with great illustrations.

Apart from measuring DC voltage, resistance and continuity, they can also measure AC voltage, DC current, transistor and Diode checking, which I learnt from here https://circuitdigest.com/article/how-to...

merchan - Contestar

Following the KISS method of instruction!

Very well done!

JD Stewart - Contestar

marvellous explanation for a layman good luck& thanks

Ajmeet kaur - Contestar

Excellent guide. Very well explained and easy to use.

Simon Watts - Contestar

Dead easy. Very impressed.

Mark Sanders - Contestar

What to say except that you are the best !!!

Samir - Contestar

Good information. Thank

Masthan S - Contestar

Thanks a lot. :) My fear with multimeter is gone now. I am able to measure with confidence.

Jaya Saxena - Contestar

Can multimeters be used to measure salinity in water?

Ella Post - Contestar

Jeff, thanks for your step by step multimeter guide. I have also written https://bestmultimeterreviews.org/ similar article in my blog. But, your article is much better than me.

Ciffakla Notam - Contestar

Simple, easy to understand, well presented. Very helpful thanks.

Nicholas Topley - Contestar

Literally helped me passed my physics test; thank you!

KATE HUT - Contestar

Thank you very much !! Nicely explained and very easy to read with the pictures provided

larykir - Contestar

Tanks very much….Its really

Austine Taiwo - Contestar

you put a lot of effort in making this tutorial. I appreciate it.

hurshell - Contestar

Thank you. Very clear and thorough.

Choymae Huie - Contestar

Thank you for the helpful information, simple for novice to understand.

mark long - Contestar

Very helpful :) Thank you.

john schulz - Contestar

Very helpful… Thank you

Rhon - Contestar

Very helpful, thanks.

Daniel - Contestar

Cool keep up the good work and thanks

Pete Garcia - Contestar

Great for beginners, thanks

Mark - Contestar

thanks for a very easy tutorial, it is very helpful! pl add some additional examples to have better understanding for beginners.Thank you

sateesh

Challa. Sateesh - Contestar

Thank u for the precise description,very very useful for beginners.

A MAZUMDER

Arunava Mazumder - Contestar

I studied multimeter in my 11th grade and since then, haven’t been around these things for a long time! I was glad to go through the above instructions and as my nephew has been studying physics as well, I was able to guide him through some subjects which really gave me a good day and made my nephew happy. Thanks a lot.

Charles Brown - Contestar

thanks for this info.

daud john - Contestar

Very good explained well. Thank you.

Colm Gibson - Contestar

Exceptional directions and explanations for each step. Even an inexperienced user (such as myself) can understand and follow the instructions. So hard to find such detailed instructions for those that “want to be in the know”!! Kudos! You deserve 4+ Stars :)

Elaine Shapiro - Contestar

We thank you for the information

zenyao masilela - Contestar

I was always confused about electricity and how to test it but your instructions have given me a better understanding of it. I now have a place to go to for future reference. Thanks.

davidleithead - Contestar

thanks for the lucid description of the three phases of testing an electronic item; good job!

Jayaraman Raju - Contestar

An excellent guide. Thank you.

Kevin Dyck - Contestar

Thanks, that's helpful to me

Congrats for showing us the best way use it

Abdul Ndove - Contestar

Excellent guide Thank you!!!!

Hubulaoo kunafufafaaa - Contestar

Easy and simple to understand!! Thank you

John - Contestar

Show us the hard stuff like MX10 android box main board how to test thank u

alf - Contestar

Well. .. thank you, this is awesome

protyp Kariba - Contestar

Well done. You've explained it in detail and was completely understandable. Tm

Todd Martens - Contestar

When testing a Tweeter the multimeter reads OL on the resistance scale. What does this mean?

walkad@internode.on.net - Contestar

Very simple and easy to understand. Thank you very much for your help, now I can use a multimeter now.

Lala Hetman - Contestar

Very informative ; Thank you ?

Abdus van harte - Contestar

Thank you so much for making it so simple to follow. Because before I new what I was doing I got the all wires mixed up on my car battery. And I nearly melted my fingers to the wires. So thanks again c foley… craigfol659@gmail.com

Craig Foley - Contestar

Very good explained! Thanks.

Ove Aarstad - Contestar

Thanks very helpful

Kenny Miller - Contestar

Thanks. Very Helpful

Kenny Miller - Contestar

Thank you so much easy and healpful

Goodluck Minja - Contestar

Thank you! Great how to advice for a beginner!

bobtruck7140 - Contestar

Knowing how to test continuity safely and quickly will both increase confidence near electronics — is that circuit LIVE? — and significantly decrease repair time.

nicO - Contestar

Thanks for the very detailed guide, good content and quality pictures.

AC is not dangerous, even V's aren't. Everyone must get worried about A's.

Sadly, you didn't include how to measure A (amperage or current), which always causes troubles to measure, to learn and understand.

Nicolas Pascual - Contestar

Hi how can I test a signal transmission through an ffc or fpc cable using a multimeter

silasbiwott74@gmail.com - Contestar

That was a really clear and concise tutorial. Thanks.

Just one request. Could you do ones on other capabilities of a DMM, please? For example, measuring ampage, testing doids and LEDs.

Cheers Wal

William Robertson - Contestar

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