How to Make a Shunt Current Sense Resistor

How to Make a Shunt Current Sense Resistor

100 thoughts on “How to Make a Shunt Current Sense Resistor

  1. Hello all! I drew the 10 winners for the MEEETAAAs between Patrons and viewers! Here is the list, which I have already contacted:
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  2. Flexible cables as shunt for high current? lol. Use a copper busbar. Calibrate with a file. Give your transformer the rest:)

  3. I know I'm telling grandma how to suck eggs, but. Running a shit load of current through your Variac at the bottom of the winding will fuck up and cook the Variac winding, making it useless!
    It's good your doing it with a new Variac and not an old school one as it'll be sacrilege otherwise. Trying to get your hands on an old school Variac these days are very hard to come by.

  4. Can you explain why step down transformer melts seconder coil if you put the power suply on secondary in order to make step up transformer. N1/N2 =316/32; U=230V

  5. … They say you learn not to touch hot things, because it hurts, and it's a reflex….. then, there is: 0:37 – 0:45
    – Let's be real here: That's just impressive. XDXDXD

  6. I thought that the word SHUNT was only used for when trains SHUNT train cars. I guess I should either expand my horizons or learn to SHUNT up.

  7. I think Mehdi may have made a little mistake at 10:08. Correct me if I'm wrong, but what I think he should have said was that the yellow current line is LAGGING the green voltage line as should happen in an inductor.

  8. Hi mehidi saghdar I am a biotech chemistry zoology student but much interested in electronics I think you can send some facts in electronics to my email kindly please

  9. "In fact the dumber you are, the more likely you are to invent the lightbulb."

    This is possibly the greatest thing that anyone has ever said. It is deeply hilarious.

  10. I just searched all of the winning names here on youtube. Not one result….Are these giveaways for real?

  11. You make fun of yourself saying meter (mether) almost perfectly, but not for formula (formoulah) 😀
    Don't worry mehdi, your accent is bad but you teach people a shotload of stuff and know way more than people talking perfect english

  12. BEST WAY TO CREATE A 10 MILLI-OHM CURRENT SHUNT: Use a jumbo paper clip and calibrate with a couple of meters and Ohm's law.

  13. Say… There definitely are tables for wire gauges which gauge is required for which max current.
    Those want to keep inner resistance negligible (eg for house installations). If you don't want to buy resistor wire (which is offered), the max current still should give you a rule of thumb which wire gauge is acceptable for which current, and which gives you a melting fuse.

  14. A resistor wired across a current meter to bypass current is a (shunt resistor).

    A resistor wired across a volt meter to induce a small voltage in proportion to current passing through it, is a (series resistor).

    In this case, we have a series resistor but shunt.

  15. 6:04 I just noticed that you already had those burns in your fingers which made me really confused. What happened?
    I am so confused. 🙁

  16. At 4:50 you say that there is no current running through your body, which is wrong. (The ampmeter shows 0.6 V which seems to be off for a 10mOhm resistor at 10A, but maybe your leads add around 50mOhm to the circuit.) You have a 10mOhm resistor with 10A running trough it, that means the voltage across the resistor is 0.1V. Lets say your mouth's resistance is 100 kOhm so there should be ~1µA running through your mouth. I am pretty sure you know this, but as you said it, it sounds a lot like the current "looks" for the easiest way which is the 10mOhm resistor and "decides" to only go there.

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