4 wire (Kelvin) resistance measurement tutorial

[latinmp1]

Awesome explanation! Keep it up!! As far as the idiot that gave it a "thumbs down"- He/she is a moron who should link to HIS video if he thinks they can do better.....jackass!

[badephemeris]

Funny.. I'm watching this video in an effort to measure the resistance of the commutators installed in the L-3 Brashear KTM mount (deathray) you show at the very end of the video.. Bizarre.

[undergroundradio11]

More vids. Please!!!

[mrmacman2u]

Thank you for making this! I adore your videos, they are practical and easy to understand and yet I find them handy for my electronics hobby! Your teaching style is perfect and your humor makes it even better! Thanks and I hope you keep making these! (ps your site is AWESOME!)

[Bylga]

Damn this is hard!

[AgentDexter47]

Using this method on thinner wires can cause them to heat and that would mess up your measurements

Wheatstone bridge may be a lot more complicated but better

[judgenap]

Yeah ! Dont Stop. Is this the method to measure a coil or a solenoid? Or motor coils?

[Afrotechmods]

@judgenap Yep. You can use this method to measure the DC resistance of almost anything. Keep in mind that solenoids and motor coils will also have considerable inductance, which may also be something you need to design around.

[smile0dont0cry]

Cool tutorial

Thank you :)

[synthdood]

Great stuff. I have been into electronics for a very long time, and your tutorials really help to clarify lots of things that I wasn't too sure about. Keep em coming, thanks!

[CuCuPaPa]

THANK YOU THANK YOU THANK YOU!!!!

[TheRealGeriBoss]

V=R in this special case yes, don't anyone think this is always the case!

[Blodslav]

AWESOME. Now do a video on death rays XD

[delfmeek]

good stuff. Thanks for taking the time to explain.

[B1r6m4n]

You are the best teacher I have ever seen. Hands down!

[bkraz333]

Great video! I was just recently thinking about 4-wire resistance measurement, which is a very useful technique.

[cyberdems]

super cool trick

[vasuthinkbig]

so nice..

[deadhasanzone]

You are ALIVE !!!! 

[o2me2]

Awesome. Thank you.

[Cloud6971]

Well done. Always an awesome video!

[Arthur61987]

Thanks for sharing.

[ubiquit23]

So cool that you produce new videos. The ratio of understanding things per minute is so high ... thank you and greetings from a German fan.

[xc3xc3x]

YES! Please keep the videos coming!

[TheCrazyStudent]

I always learn a lot by watching your awesome videos! Thank you for putting them on YouTube.

[xXdenhartXx]

Awesome!

[Intosia]

Great stuff :D

[GeneralSpecifiK]

awesome work, I am glad to see you're still going :-D

[NOLIMIT69NOLIMIT2000]

I just subbed to your channel not long ago and I have to say this is very informative. Thank you.

[silverstream314]

Couldn't you use a pot together with the LM317 instead of fixed resistors to tune it to 1A with the multimeter?

[GeneralSpecifiK]

@silverstream314 well, ok, maybe you could. The purpose of the fixed resistors would be the same as the potentiometer, but I really doubt you have a 2 watt pot laying about. then again, if you want to buy one i think digikey part number CT2150-ND would work. its about $5 + shipping

[Yaga19]

You could be the best teacher EVER!

[idlecode]

Thanks for not being dead!

[1acroyear1]

OMG! Welcome back!

[yellowmetalcyborg]

I'm not really into electronics at all, but I might actually try this. I need to know the exact resistances of the liquid nitrogen cooled fullerene superconductor electromagnets in my deuterium-deuterium fusion reactor : P.

[Serostern]

@yellowmetalcyborg The resistace of a LN2 superconductor?

0.

That's the entire damn point of a superconductor xD

[yellowmetalcyborg]

@Serostern Liquid nitrogen doesn't stay cool forever, so I need to measure the resistance of the coil once it warms up, so I know how much longer I can make it run before shutdown is necessary : ]

[squiggyreck]

Another great video. Thanks...

[daxweb]

imho , the best electronics tutorials on youtube..

i'm your fan!!!

[GTXAbunada]

If I see a dislike on one of your videos I am going to sue YouTube ... Err, on second thoughts I won't

[Serostern]

This is one of the most useful electronics tutorials I have ever seen!

[BeeRich33]

Your significant digits are off. That is important.

[HighskillCharly]

:D

[RavenRof]

YAY! Another video. Awesome.

[dealio82]

Won't that blow a fuse in your power supply

[Serostern]

@dealio82 Nope, the power supply is capable of running loads of 10amps, the fuse is to protect the PSU from the input current, not the output =)

[dealio82]

@Serostern My power supply is made of a computer PSU so every time i connect the 12V output to a relay or an inductor it will shut down. Is there any way to prevent it from shutting down

[steveBB30]

@dealio82 I use the same kind of PSU for powering designs that have high currents. Some computer PSUs seem to need a minimum load to stay on, but that doesn't seem to be your problem. Think you are tripping it's over-current protection. Use the LM317 "current limiter" technique?

[Serostern]

@dealio82 Oh.

You needa power supply where you can adjust the amperage, the computer PSU always gives its max.

[dealio82]

@dealio82 THX Man for your tips

[Drd4all]

Great one, thanks !

[thijsloon]

Just when I needed it, thanks!

[kekejojo1212]

NEED MORE

[brucardoso2]

Finally! I missed your videos... Don't you disappear like that again!

[Afrotechmods]

@brucardoso2 Can't. I'm 62% ninja.

[AgentJayZ]

@Afrotechmods is that + or - 10%, or 5% ?

[aaabatry]

this guy is frkn funny :P you can never find an experienced electrical engineer with a good sense of humour ahaha

[tubemasta5000]

Been a while. Illuminating as usual though. Or should that be electric / electrifying?

[noname973]

interesting video!

[darkstar744]

:O

[Afrotechmods]

4 likes before I even had time to change the title! Damn you guys are quick!

[Ards777]

@Afrotechmods Yeah you should keep up :D

[jvcrules]

cool