Part 3: How To Test Resistors With A Multimeter

Part 3 of a series of tutorials on how to test various electronic components with a multimeter. In this episode I'll show you how to test Resistors and give a simplified explanation of what they do.
Wikipedia resistor colour code mnemonics (how to remember the codes).
en.wikipedia.org/wiki/List_of...
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#learnelectronics #electronics #components

[@rondavis2616]

A very helpful video as a newbie to Electronics, although already stumped by a Resistor Value, due to a burn darkening. Thank you for your help.

[@BuyitFixit]

Thanks Ron 👍

[@LeeMooEez]

This help me a lot since I kinda forgot what I’ve learn in the past I guess haha…easiest explanation and demonstration..thanks!
I watch couple of your videos (because I just discovered this channel by chance) and I’m quite frustrated on why did this channel didn’t boomed yet with all the quality content shown here huhu😭😭😭
Btw goodluck!

[@BuyitFixit]

Thanks Lee Moo Eez👍 I do try! And really appreciate positive comments such as yours! Hopefully my channel takes off at some point!

[@rnb250]

Brilliant! Thank you 😊

[@BuyitFixit]

You're so welcome!

[@simpletools6805]

thank you so much you are an amazing teacher

[@BuyitFixit]

Thank you too for your kind comment 👍

[@sakisgri2165]

Thank you. Nice video 👍

[@BuyitFixit]

Thank you too!

[@roneckler9937]

well I was really hoping to see some of the sayings on resistor codes here, but, no luck.... lol I did learn a neat way to check a resistor when it is open, and burnt, or discolored really bad. if you scratch off the ceramic coating to get to the coils inside, you should be able to read the resistor or at least half of the resistor to determine the value of it. That is a good way to find out especially if you don't have schematics to follow. great video again.

[@BuyitFixit]

Thanks and Thanks for the tip 👍

[@TopOyster]

That Fluke 77 is lovely. Worth a recalibration ;)

[@BuyitFixit]

Yes, used that meter for years. Upgraded to the 179 about a year ago, but still have the 77 as a spare, and a 73 too!

[@MrPhilgascoine]

Thank you 👍👍

[@BuyitFixit]

Welcome 👍

[@niconine268]

Thanks i like it

[@BuyitFixit]

Thanks 👍

[@marketingmixture]

Very informative

[@BuyitFixit]

Thanks 👍

[@user-lq5md6iv6o]

That's great

[@BuyitFixit]

Thanks 👍

[@waynetaylor2784]

Mosfets totally confuse me a video on them would be awesome, what used for, what's source drain gate etc ? Especially in laptops

[@BuyitFixit]

They are similar to transistors (see pt4), Gate is similar to the Base on a transistor (the signal to switch it) and the Source, is usually the Source of the power, and the Drain is where it Drains to when its switched on.

[@sabiya2]

Hello I have a cordless drill charger, there’s power going to it but the led’s on the charger don’t light up nor does it charge my battery, it’s a tiny board with one small resistor resistor I’ve measured that and it reads 00.5,as the board is so small there’s nothing else to check, is resistor bad or anything else I can check a new charger is quite expensive.if I can repair this that would help great.
The colours on the resistor are Black,Brown,GreenSilver and Brown.

[@BuyitFixit]

You can drop me an email at the channel's name at out look dot com with a picture of the board perhaps?

[@sabiya2]

@@BuyitFixit yes sure I can do that

[@gavinlocke2369]

is the any way of finding out what the blank ones are

[@BuyitFixit]

Only by measuring them (preferably out of circuit).

[@michaelalfonso8370]

how the latest resistor that use in cellphones they are too small how to distinguish their values?

[@BuyitFixit]

Unfortunately you can't, unless you have the schematic diagram for the phone.

[@fddustin]

when installing a resistor is there a positive or directional

[@BuyitFixit]

Resistors don't have a polarity, installing either way is fine.

[@NicksStuff]

Ohhh, please teach us the offensive mnemonic technique!

[@NicksStuff]

Found it! I'm not sure it's safe to post on RUclips 😬
But as a mnemonic it's great, there's no way I'll forget it 😬😬

[@BuyitFixit]

There's a few, the one I was taught was ***** boys r@pe our young girls but virgins go without. This was back in the late 80s when I was doing a YTS course.

[@NicksStuff]

@@BuyitFixit I saw the variation "Violet gives willingly"

[@Googlename699]

When I measure ohm by fluke, it starts with a big number then goes down to a number. Why it does that? (e.g starts with 315.7 ohm then decrement down to 150 ohm)

[@BuyitFixit]

Not 100% on that. Is the meter working ok? Accurate? Have you tried a different set of leads ?

[@chickenfoundation9323]

Should all resistors have continuity?

[@BuyitFixit]

If you mean with like a beep on a multimeter, no. If the resistance is too high then it won't register. Like a 10 ohm or 100 ohm resistor would beep, but a 10M ohm would not. Hope that help!

[@user-xv6my7iw7h]

What of when we have two same colours how do we read it

[@BuyitFixit]

It depends where the colours are so 220 ohm would be RED, RED, and BROWN ( which means 1 zero)

[@basilwatson1]

ahhh you mean "bad boys "roger" our young girls but Violet grew Wise?

[@BuyitFixit]

Close, the first word was just the colour, the "roger" was a sexual crime, and "virgins go without" was the end part. There is a whole list of them here: en.wikipedia.org/wiki/List_of_electronic_color_code_mnemonics

[@treadmilldoctorgh2607]

Kindly send me the colour code of resistor to study

[@BuyitFixit]

It's on the video, just pause or screenshot :)

[@franksellitti4784]

It is ZERO not NORT

[@BuyitFixit]

dictionary.cambridge.org/dictionary/english/nought 🙂