Isolated Voltage Measurement - Hall Effect

I just discovered your channel and your videos are very good! Keep it up! I'm looking forward to more videos

Thanks for this great series! I was working as a BMS Trainee Engineer a few months ago and was working on the battery voltage isolated sensing when I came across this problem. I even searched for 1-to-1 ratio flyback converters but they also didn't seem like the solution. THIS SERIES INSPIRED SO MANY IDEAS.

Magnetic measurements also are sensitive to the surrounding magnetic field, so that if you move your device you will see a change in the output offset

I think at 100 kHz your system starts ringing. Since conductors resist changes in current and you're trying to change the current fairly quickly at 100 kHz. The coil introduces a delay, which means that your feedback circuit corrects for the current too late, either increasing or decreasing the current, depending on the phase shift. Basically, as you already suspected, you probably need a coil with less inductance. Which of course also decreases the sensitivity, so as usual it's a trade-off... Anyway, so what's up with the German flag in the background?!

I have a system with 70 - 120V output at around 40 to 100W - but the frequency (I can vary) is around 10-40 KHz. Load is an incandescent bulb. I need to measure the output power at that frequency (especially around 10 kHz. It looks like your system will work... but what do you think? thanks

you do have cores with a gap they are called a pice of bent iron it will work even at highrates of changing flux because of the air gap saturation should not happen .

The IL300 matched opto is more accurate (about 4x more) and way faster (with fast op-amps, hundreds of kHz could be done) than this hall thing. It must have something about it that the IL300 does worse, otherwise why?

The life of an electrical engineer “I have to be quite speedy to take measurements; otherwise, everything will start burning and melting.”

I am so pleased with your candor. “The capacitor clickbaity thing for more subs” is hilarious.

👍👍

Great video! I thought I had a good understanding of how hall effect current measurement works.

Thank you for such an elaborate and simple explanation about Isolated Voltage Measurement technique using the Hall Effect!

Could've easily done it with 555 timers.
Albeit, this is yet another gems.
I really admire your skills and how much easier to contemplate your analogies are.

Inductive current sensing resistors, pfffffff !