[Reupload] How to Make a Shunt Current Sense Resistor

If you want a fancier do-it-yourself current sense circuit that works from 12 V to 400 V, an engineer at Texas Instruments made a neat design. A cool read even if you don't want to build it. <a href="http://www.ti.com/lit/ug/tidu833/tidu833.pdf" rel="nofollow noopener" target="_blank">http://www.ti.com/lit/ug/tidu833/tidu833.pdf</a> (Still not as practical or entertaining as Mehdi's SHUNT)

The probe is the bit that you poke at the electronicals you're trying to measure/observe, it connects to the scope. Most modern oscilloscopes are dual-channel, allowing you to connect two probes to measure and compare two different waveforms (e.g. you can measure the input and output of a buffer/amplifier simultaneously and compare them to ensure the circuit is behaving as designed).

Chris Talbot

As long as the SHUNT temperature doesn't drastically change, the resistance shouldn't change much. Commercial SHUNTS are more stable over temperature of course.

ElectroBOOM [Mehdi Sadaghdar]

Hi sir, I was wondering if there were any changes to the resistance when we put huge Amps through that self-made SHUNT RESISTOR

Kai Song

Your explanation of Current vs Voltage killed me dead. Keep it up sir. I don't care about your science very much, but your humour is out of this world. You deserve money. Here is mine.

ITookPennsWokThisWayIdeaAndFellFaceFirstIntoAWok

MEETTAA !! XD

I just love the "almost overlooked" aspect of how the current through the transformer was distorted... very difficult to show that normally - for me, this shunt is immediately worth it for that alone.

MEEETTAAAASS

Scope, yeah!

GIMME DA SCOPE!!!! i was just asking my g-father (an electrical genius and electrical engineer for shell oil) if he had a scope i could borrow.. sadly, he no have one. i also called it a “probe” a couple times haha idk why.. maybe i remember it as probing the current to see what its doing?? Lol who knows

Isn't it Jigawatts? I always assumed getting jiggy with "it" is what let you travel thru time.

JG

Metah please!

Getting young people interested in engineering isn't simple. You're doing a great service to the world. Thanks.

Nice METHER you have there!

GIMMI DA MEETA. ..... Some Hilarious Unusual Nefarious Torture. ..... S.H.U.N.T. ..... AaaH ha ha ha ha ha ha ha ha ha ha, ... hang on, I'm outa breath, ..... ha ha ha ha ha ha ha ha ha ha ha ha.

Of course it could

Can the meter measure 1.21 gigawatts??

I've been an electronics tech for over 30 years, most of that in the field of calibration. I've calibrated many shunts (which are also called Current Viewing Resistors or CVRs). Your explanations and demonstrations (although frightening; I hope you have a very good life insurance policy for your family) are amazing! You may also want to talk about Current Viewing Transformers (CVTs) sometime. Thank you!

Gimme Da Meeta

Real shunt, I could use da meetaa for...electric things....

JG

The measuring wires create a circuit in parallel with the shunt. So, you have a very low resistance resistor (the shunt) in parallel with a very high resistance resistor (the voltmeter), and the result is that the combined resistance is very close to that of the shunt alone.

Isaac Roll

@1:50 instead of relying on the limited precision and very unimaginative multimeter, why not use a WHEATSTONE BRIDGE for maximum precision and internet fame

Isaac Roll

Why do the 'measuring wire' extensions not effect the resistance and such of the shunt?

Ruthalas

Perfect now, since I've watched it twice now would you gimme da meeta? I hope your fingers are fine Ö

Thanks for reuploading!

Jonas Strand

Gimme Da Meeta so I can make my SHUNT.

Love to see a man suffering for his art. Gimme da PSU so I can burn too :-)

Wow, you have really hairy knuckles! How have you not burned the hair off you knuckles yet? Anyway.good info in this video..I actually learned something new today!....oh and GIMME DA METAH.....

Nice!

Aaron Brinkman

Gimme Da Meeta....please and thanks

It works!

Please sir, may i have a powersupply?

Al

Can you please GIMME DA MEETAA...

Can you have a feedback loop to increase the supply voltage so that the voltage after the shunt is the desired voltage? Also, scope please!

Gustavo Goretkin

Wow, you acctually burned your fingers 0_0 Also, give mee daa dc-powersupply

Give me an oscilloscpe now! please :)

Dear Sir, MEETTAA PLEASE?!

Gimme da USB oscilla !

lululombard

Gimme da meetaa! :D

Gimme da meeta!

Gimme da meetaa!

Now the video works. Gimme da meetaa!

Gimme that meettaaa

Sorry for the burns!

Antti Louko

Gimme da MEETAA... please

Gimme da MEETAA

I have a sterling engine with a small generator attached. I have been thinking of something to use as a load, may try this out. Thanks!!!

Yep

METAAAA

In case my request got lost with the broken video, I'd absolutely love an LCR meter to replace my shonky home made one and help restore vintage radios, something I enjoy doing when I have time :-)

"The more dumb you are, the more likely to you to invet the Lightbulb" Loved it

GIMME DAMNIT MEETAH!!!

no, the scope can do 150Vrms

ElectroBOOM [Mehdi Sadaghdar]

Just out of curiosity... Were you using a high voltage probe for measuring voltage of the MOT wit da scope?

Gimme dat MEETAA...................!

Gimme da MEETAA............. please.

I'm all for it! Gimme da MEETTAAAs

Steven Brauch

I'm still not sure how a shunt works or why nothing entirely blew up, but I could really use the meter and particularly the scope for my son!

Kenneth Carlile

Interesting as always! Thank you.

Why spend money when you can spend your time and less money!

I shunt this! 😁 My meter from school in '95 finally bit the dust. Would be awesome to have one of these.

Blair Cox

Gimmie dat META! Good job all fixed. Also I thought to cancel the waves the wire would need to be twisted after it is folded.

MEETTAAAs you say? GIMME GIMME!