ฝัง
- เผยแพร่เมื่อ 4 เม.ย. 2020
- Measuring current is simple. Right? You just take a multimeter, connect it to the two cables, and read the value.
If you want to do the same with a Microcontroller like an Arduino or an ESP, things get a little more complicated. Let’s dig into it to see how it works! And which is the best sensor for our projects?
Sensors in the video:
MAX4080: s.click.aliexpress.com/e/_Dku...
INA169: s.click.aliexpress.com/e/_dVM...
INA219: s.click.aliexpress.com/e/_Dn0...
INA3221 (order black module): s.click.aliexpress.com/e/_DlW...
ACS712: s.click.aliexpress.com/e/_dS7...
ACS758: s.click.aliexpress.com/e/_d66...
WCS1800: s.click.aliexpress.com/e/_Ddf...
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Ohm's Law: I = U / R
You are right !
For fans of the streetfighter franchise it's quite easy to memorize: RI=U
@@VincentFischer Or for the Swiss: U = RI
@@markusmohr5470 I was taught I = V/R
Same but different symbols
I learned V = I * R. Pretty basic.
That hand-pointer is hilarious!
Thank you!
Yeahh
I really like that you explain in detail the reasons for not doing things a certain way, rather then just telling us how to do things correctly the first time.
I find it helps me understand things a lot better when I know the 'why not' as well as the 'how to'.
Thank you for sharing your knowledge in such a high quality manner!
Thank you for your nice words!
As always, this video is torough, detailled and exact !! Thanks Andreas ! Your work is greatly appreciated !
Many thanks!
Thank you very much Andreas. Yesterday evening I was looking at these types of sensors to improve my project. And today there is your video ! Did you hear me from switzerland !?!? ^ ^
Perfect in timing !
I asked Google what you weree searching yesterday and adapted the viceo accordingly ;-)
I was researching for few months on measuring mains current and voltage. Finally your video. I have seen almost all video. But no video explains as you did. I needed this video a month ago. So that would reduce lot of my hard work.
Sorry that I was too late!
An enormous THANK YOU to all TH-cam content creators for providing all of us with additional content during this very trying time! I can only speak for myself when I say you are helping me retain what little sanity I have left having been sheltered in place for the last 2 1/2 weeks!!
Thank you for the nice words. We are glad to help!
you videos are such a wonderful resource on the internet. thank you Andreas. Love your country - spent many days leading boy scouts around the country from Kandersteg.
Thank you for your kind words! You chose a nice place to judge about our country ;-)
Love your video Mr. Spiess. I am a mechatronics student. I am always able to solve most of my problems and improve my designs just by getting inspiration and knowledge from your videos.
Keep up the good work sir and stay safe.
Fantastic! I have not problems wit hCovid-19 because I live in the basement while creating videos ;-)
your channel is the first place to start searching whenever I need something practical and advanced ! ,, thank youuuuuuu man I wish I can meet you someday.
Happy to help! You are also one of my most loyal subscribers!
This is exactly what I need for power data logging project of measuring voltage & amperage over time 👍 love this channel & thank you for all the hard work you put in to produce your videos.
Glad to read that you can use the content!
@@AndreasSpiess Is it possible to cover power measuring sensors with data logging function in future?
I do not think so because we build our loggers ourselves ;-) So the topic is probably too special for most of my viewers.
Looking forward to using some of these sensors in future projects. Thanks!
Have fun!
Excellent video. I also appreciate your excellent Spanish subtitles. As a hobbyist playing with electronics who has a need to learn Spanish, I find your videos extremely useful.
The subtitles are made by Luciana, my Translator.
Thanks Andreas, I want to measure the current used by a small brushless motor inside a tank to not only sense when it is running but also for diagnostics in case it stalls. This video just at the right time!
Glad you can use it!
I'm about to start a design for a current data logger. Glad I found this video. Thanks!
Glad it was helpful!
Thanks Andreas. This was a very useful test.
Well presented. I've been using ACS712 sensors in a solar test bed monitoring project for several years now. Lower precision works ok over time, and a single sensor measures battery charge and discharge.
Thank you for sharing your experience!
Just what I was looking for! You are reading my mind! Thanks again Andreas!!!
Perfect! I hope everything is ok on your side? Covid-19 maybe has a long way to get to Lincoln, so you might be lucky ;-)
@@AndreasSpiess The neighbor across my house returned week ago from hospital, almost died, he had Covid-19! I spoke to his wife, about 5 meters away, and she did not get it or did not have any symptoms at all - like many people, who had it not knowing at all. And I hope you are staying safe also, I don't like you get it at all! Have a great Sunday!
This is a video I've been waiting for ! looking to create a voltage/current/power consumption device.
Good luck with your project!
Another super informative video ...I have just gone though this with a project for work although I opted for the ACS 758 higher powered version for my application. It does work very well though as our devices range from 0-13 and 0 to 20 amps.
Thank you for sharing your experience!
Thanks Andreas for another useful and detailed video.
Just to mention that the Adafruit script would give the correct bus/load values if you swapped the wires connected to the shunt.
You are right. When I made the video I did not yet recognize that the INA219 can measure current in both directions :-(
This is a very informative video. Just when i was deliberating on which sensors to choose for my power measuring projects. Thanks for this Mr. Spiess
You are welcome!
it was an educational and useful video. I watched every second with pleasure.
Glad you enjoyed it!
Great video, I like the sensor that can be used without having to cut the wire as I could measure energy consumption of my appliances or circuits.
Thank you!
Just bear in mind that, just as with clamp-style multimeters and current transformers in general, you have to pass *only one* of the current-carrying wires through the loop of the sensor.
So for an AC mains appliance you can pass through the sensor EITHER the line wire (aka live/phase/hot) OR the neutral wire (aka return), and most of the time that still requires modifying the cable (at least to remove the outer layer of insulation for countries/appliances that use double-insulated mains cables) or creating some kind of adapter that you can plug the appliance in to.
If you were to pass a mains-powered appliance's cable as a whole through such a sensor it would read zero - or at least close to zero - as the field generated by the current flowing one way in the line wire would be cancelled out by the opposite current in the neutral wire. (There may be a small non-zero reading as a result of sensor error, any current leaking to earth external to the cable [hopefully none!], and - I'm not at all sure about this - maybe even non-unity power factor from capacitive/inductive loads, such as motors, switch-mode power supplies, etc.)
And actually, all of these sensors have limited value for measuring mains AC appliances for two reasons: all they tell you is the current - and is that RMS current or the instantaneous current at the time your MCU decided to make a reading? After all, the current draw of most AC appliances goes up and down alongside the sine wave of the voltage!
Without knowing the supply voltage, you can't know the power consumed, which is often what we're more interested in. Yes you can estimate the supply voltage at 100/110/115/120/220/230/240V RMS nominal (any I missed there?! 😹), but in practice that varies throughout the day, and thanks to the nightmare that is power factor, unless you know the true, not-RMS voltage (i.e. the exact point on the voltage sine wave - between ±141V [100V RMS] and ±340V [240V RMS]) at the moment the current was measured, at best you're probably only calculating apparent power, not real power; see en.wikipedia.org/wiki/Volt-ampere
I've used some smart-home-style current-transformer clamp-based devices that are designed to be clipped around one of the wires leading to/from the house's electricity meter, and I found that they differed from the correct value (as measured by the electricity meter itself) by 20-30%, which I figure is mostly because they have no reference to the mains voltage, so they have to rely on an estimate of the RMS voltage and *a complete guess* at the house's overall power factor! :S
@@AndrewGillard very clear thank you for these details
As always very valuable video!
Thanks Andreas.
Glad you liked it!
Endlich ein Video was genau mein aktuelles Projekt betrifft... Solarzellen, Laderegler, Batterien, Verbraucher... Super Video
Danke! Nun sollten wir nur noch ins Do-it-Yourself gehen dürfen...
@@AndreasSpiess Na zum Glück stellt die Post noch von AliExpress zu ;-P.
Hi, great video. Right now I am working on a Design, that needs current measurement. I choose the TLI4970, which can do up to 50A bidirectionally, at very low heat losses. It outputs a clean 16-bit digital signal.
An interesting part. An "INA219" with a hall sensor! Good choice.
Greate video mate. You have a great gift to educate, throughly enjoy the videos and it keeps me making...
Thank you for your nice words!
I've watched quite a few of your videos, but this one, earned a subscription! Trying to design a DC power supply with 30v/5A on 2 channels, which can be run in series for 10A, and using a 3.3v MCU as the controller, so I think I'll be looking at hall sensors!
Good luck with your project! Seems to be nice.
Cool video, all in one place assembled.
Thank you!
Thank you I like it. I like the arrow direction of Power Source too.
You're welcome!
I would really like to have your opinion on changing INA 219s shunt resistor for different loads and voltages.
I absolutely love your videos.
You are a beacon to self- made specialists and electronics entrepreneurs.
Just change the resistor and do the calculations according ohms law (the right one, not mine ;-)
I recommend you take a look at the INA260. It’s I2C and works on 3V or 5V logic. It can measure up to +36VDC at 15A continuous on either high or low side using a 2 mΩ sensing resistor.
Another viewer suggested this part, too. Very nice, but not cheap ;-)
@@AndreasSpiess true, it's not cheap, but come on as a Swiss you are used to that. 😜
But jokes aside, it is very precise and has a very low resistor value. So the voltage drop is minimal and the measurement range is huge.
I’ve used this part in a commercial 1kwh 24v battery pack. It performs very well.
Amazing video's! Thank you for sharing your knowledge and all the time you put in to these projects!
My pleasure!
It's really great walkthrough, thank you
Glad you enjoyed it!
Thanks a lot for these excellent and educationnal presentation .Everything is clean ( the swiss quality of course ) , even the hand-pointer :D .
The hand seems to have a lot of fans...
I use the LTC4151 as a current sensor for my home off-grid solar system. I use two per shunt to give me bi-directional current sensing. Not a cheap chip but great for my setup.
Thanks for sharing your experience!
Thank you! Very informative Video!
Glad you enjoyed it!
Great in depth video 👌
Appreciate it!
I wish you would have tested the INA260. That seems like a sweet ic. Great videos 📹 ! I appreciate you sharing your knowledge. 👍
You are right, it is a good chip. Welcome on the channel, BTW.
Nice video as usual. I think that I have tried the INA219 Before and it measures the current in ( Bidirectional + and - ) without no problems. You could connect it to a battery and ( sink , source ) current.
Omar Mekkawy I just checked the data sheet and it does have a sign bit. Also I'm pretty sure I hooked my leads up backward when my mAh tester project the first time and I did get negative current readings when the supply read lower than the load.
You are right. My mistake!
Andreas Spiess, I should have read more of the comments. You stay safe!
@@AndreasSpiess never mind. you are welcome.
Thank you. This is an excellent video; very informative.
Glad you enjoyed it!
Very timely. I am a novice using a small 5v solar panel to power an Arduino and LoRa unit. I think the current drops too low when shady, so it will useful to implement one of these units to track current and only try to send comms when enough current is available. Thanks!
Jason Pluis adding a battery helps, but luckily you're on the right channel to find out about this sort of thing!:)
Without a battery it is probably easier to use the analog input and decide on the voltage at startup.
I've been using ACS724 carrier boards from Pololu and they've been great for my projects.
Thank you for sharing your experience. I assume they are similar to the ACS712?
Hi! Great video! I have tried some of those sensors, but now I will try the hlw8032 for AC power, looks like it can measure current, voltage, power factor etc... looks promising =]
Maybe you watch my today's video ;-)
Wish i stumbled across this video earlier, what an excellent practical introduction! Wish i'd found you earlier would have saved me a while load of googling time.
Welcome aboard the channel!
Thanks, well presented and useful.
Glad it was helpful!
I work as a hardware design engineer and tbh high side current sensing is almost always preferred on our circuits for various reasons. We use opamps from TI specifically for this.
I also do not like to cut ground wires...
The probkem has been, typically, that you need to measure voltages that are higher than the V+ in the DUT, in case where you are measuring your 'own' current consumption, which is a probkem for most amplifiers... of course, low-side measurements make the V- a bit 'floating', but the voltages being measured are referenced to 'ground', making noise suppression easier... high-side measurements also affect the apparent V+ of the DUT. Lots of considerations to make, almost all of them introduce some compromise in the DUT performance/stability, or bandwidth, or sensitivity, or dynamic range, or... I spent a few years doing this stuff...
Which opamps please.
which part number are you using ?
@@OmarMekkawy OPA192
It's a wonderful audience here - every small mistake is recognized immediately - awesome video btw.
This is the fate of the guy who stands up and does something...
@@AndreasSpiess wer viel macht , macht viele Fehler,
wer wenig macht, mache wenig Fehler,
wer nichts macht, macht keine Fehler und
wer keine Fehler macht wird befördert.
Da hast du recht. Wahrscheinlich sitze ich deswegen immer noch im Keller ;-) Aber ich bin zufrieden.
really good video, thanks Andreas
You are welcome!
Fine video. I chose to use a now obselete Infineon device, the TLI4970 range. This enabled me to resolve 6.25mA yet still measure 25 amps bidirectionally. I was far from perfect in that it used an SPI interface to obtain the current measurement but a one-wire style bus to minimise bandwidth (needed to get the fine resolution).
6mA on 25A is impressif!
Just ordered a couple samples of the INA260 that has an internal shunt and i2c. Can't wait to see how this compares!
They for sure are ok...
In the both first cases if the load circuit is different from the measuring circuit i.e. you power the load and the measuring system(here arduino)with
two seperate inputs ,you can use the potential difference between the small resistor to detect the current in the load circuit.
You are right.
Great introduction lesson !!!
May I suggest a lesson on physical values representation on uC.
I think to many people are using real and double to perform math stuffs evenif ADC and DAC have usually 10-12 bits + quantization/linearity error. Proper 16/32 bits integer math could be enough ( remember first Bosch engine/break control unit was based on 8bit uC)
Maybe a topic for a quickie...
Thanks for the info!
You are welcome!
You can measure incredibly small currents with the hall sensors by putting an inductor with more turns near it.
There are also some self-oscillating inductor types that measure current through a transformer.
This seems to be a quite complex procedure. But you are right. It seems to work.
I think you'll find low-side shunt based monitoring fairly common actually! 20:20 INA210 and LMP8603 for starters. If using external shunt the safety benefits are great enough to warrant the loss of short-circuit detection the high-side offers (which is another plus for high-side not mentioned).
You might be right. But I do not like to cut ground wires...
@@AndreasSpiess One context for using a low-side shunt is when you have panel mounted shunts a distance away from the monitor. It's safer to then have the shunt sensing leads routed to the monitor because they're nearer ground potential. Not sure if it's a matter of personal taste :)
I watch your videos more and more, so I can get good with your accent... At the first time it was horrible, but your knowlage is huge! I build myself many cool projects. I like your and great Scott's videos, because its so great to Learn things. Ok sorry it's pretty late and my brain is already gone asleep, Im sorry for my bad English writing...
Thank you!
Excellent explanation. I just proved your point on destroying an INA169. I put +12v across a 50 ohm RF dummy load from a bench supply with the INA in series. I took the +5v for the INA169 from the 5v pin on a Nano. The Nano was powered from USB. Worked for a while, until I lifted the load. Poof! Unfortunately when it fails it shorts the shunt to ground. Make sure your power supply is current limited.
Shit happens... Fortunately they do not cost a fortune...
Getting expensive watching these videos. I keep buying the stuff you show us Andreas. Loving it though so keep it up.
As long as your wife does not intervene ;-)
Excellent video ! Also just in time as I'm working on a voltage/current/power project right now. I know what to do now as soon as the Corona restrictions are over... Stay healthy ! We want to see many more of your projects/videos. Who else is going to entertain and inform us on a Sunday morning... ?! Ok, my wife... maybe for entertainment... but for the rest... ;-)
Pay attention. Maybe she wants to know what her husband is watching every sunday morning and reads the comment ;-) We all wait till the do-it-yourself shops are open again!
Interesting topic. Thank you
My pleasure!
As always. A very good overview of available components. You asked for other current measurment needs. Right now I am looking for a 3 phase AC mains measurement sensor/device with one MQTT "result" = +/- Current Power Consumption.
Finaly. AC current measurment and power calulation with coils.
In case of enough Solar PV power I would like to control the boiler heater with it. Yes, there are final products on the market. Including thyristor output. Some of the power meter do not have an output. Often the Output is very slow. openenergymonitor would be a way to go. Some chinese Powermeter offer products with MODBUS. But in most cases no CE conformity.
I did not cover mains in particular. There you get other sensors. But I have no overview.
I'm in the process of making a home brew DC load right now so videos like this are especially handy!
Glad it was helpful!
Vielen Dank! Genau der richtige input!
Bitte, gern geschehen!
This whole review is saving my solar cell project. Thank you so much for creating this content!
I have a question: can the INA219 measure currents in the order of *micro* amp? (1.5uA is the reading I'm grtting on my multimeter from the solar cell I have)
The INA219 does not measure current. It measures voltage across a shunt resistor. For small currents you can increase the resistor value. But then it has other disadvantages. Maybe you watch my videos about deep sleep (e.g. th-cam.com/video/LUB8RWzzLWc/w-d-xo.html )
Anyway, I do not think that uA in a typical solar project are important because you probably need at least mA to charge the battery. So you probably need more sun or a bigger panel.
@@AndreasSpiess 1000 times thanks for the help!
This is good timing...I just got my ACS712 analog sensors in and was testing them and they did not show 2.5V at zero current. Reading up on this, I found that they need a precise 5V vcc to guarantee 2.5v at zero. I stuck a 7805 to deliver precise 5V to it and voila, it worked precisely as expected. You should mention that.
The INA226 sensors dont seem as sensitive, they must have a 5V zener reference for their ADC or something like that.
I assume the INA219 has a built-in voltage reference. The ACS chips not.
I used a current transformer to measure AC current drawn by a refrigeration compressor. It was quick and sensitive enough to detect the inrush surge upon start. (This led to a hurried code patch to ignore the excess current for a number of mains cycles after compressor start.) Accuracy was good enough for the application. Better than 50mA according to an uncalibrated AC meter.
A few code tricks to get the "RMS" current from the sine wave... detecting zero-cross points for mains frequency and therefore when to measure the "RMS" current.
Maybe I will come back to you with the "RMS tricks" when I prepare a AC current video...
really good video. Thanks
Glad you liked it!
6:52 Thank you professor. I thought it is just me who thinking to replaced current sensor with two or more resistor
:-)
Hi Andreas, many thanks for your informative videos. When testing the INA169 you increased the voltage but the current remained constant, as per Ohm's the current and voltage are directly proportional there the current should increase when the voltage increases.
Looking forward to your reply,
Russell
LIKE YOUR POINTER SIR.NICE WORK KEEP IT ON,THANKS
:-) You are welcome!
your videos are usually interesting, including this one
Glad you like them!
Thats a Video i really needed :)
Good to hear!
Very interesting video Andreas. Thank you. What would you recommend for measuring industrial current loops (4-20mA @ 24V)? I'm just using a simple resistor in my circuits and measuring the volt drop, but something a little more sophisticated would be desirable. Thank you again. Greets from Scotland 👍
I assume all the "type 1" sensors would give you results. The hall sensors probably are not sensitive enough.
Look at the RCV420 IC from Burr Brown/Ti, a much better solution, that converts 4-20mA to 0-5v. With an external 16bit ADC i2c such as ADS111x this is a robust solution. www.ti.com/lit/pdf/sbvs019
You should have a look at a company called LEM, I thought they have a production plant in Switzerland. I also missed the distinction between open-loop and closed-loop hall based sensors.
I looked at their products. It seems to be a very special product for precision usage. The principle is interesting, but nothing for this channel.
Andreas, i admire your videos.
Here i would suggest to include Current transformers connected to builtin adc. Like the last one.
I did not cover AC in this video. Maybe I will do one in the future...
Very nice explanation thank you
You are welcome!
I like the high-side analogue types as you can feed the output voltage in to the uP analogue input as well as its comparator input. this give the circuit the ability to kill the power on overload without waiting for the software to notice. it's good on safety grounds as it removes the software from detecting the fault current and of course still works if the software has got stuck in a loop. Oh and is faster to act.
I assume this is the reason for the INA226 which has such a pin. For safety, this is for sure a good thing. One other sensor also has a comparator on board for that reason.
@@AndreasSpiess yes it's always better to remove software from detecting faults and acting on them, better at times to act then let the software know. i know you can use interrupts, but interrupts make it harder to demonstrate that the code will always work as you cant easy test your code being interrupted in every possible place.
Thank for another thought provoking video.
Use to hate flowing earths myself. Hope you are well Stay safe.
Here the worst seems to be manageable. The new infections are constant. The hospitals still have lots of capacity...
Thank you so much for the excellent lessons! By the way, your videos are premium quality indeed. May I know the set up for your recording please!
Thank you. I use a Sony RX10, a Rode NT1A, and Davinci Resolve.
@@AndreasSpiess Thank you so much Sir!
At 6:00
An inverting shunt op amp, doesn't need a negative supply, so long as it has an input voltage range that includes the negative rail.
Thank you for the info!
@@AndreasSpiess You're very welcome...
I didn't explain...
For beginners...
If the non-inverting (+) input of the op amp is tied to 0V, the amplifier will attempt to keep the inverting input at 0V too. When a negative voltage (with respect to 0V) is applied to the input resistor, the output of the op amp will go positive enough for the current through the feedback resistor to counter the input current and hence pull the inverting input pin back up to 0V.
For alternative current, there is also clamps without hall effect, only transformer-like, for example SCT-013-000. And they can be clipsed around existing wire, perfect for measuring AC without even disconnecting anything. One may take precautions to over and under voltage if used with some arduino analog input. Combined with a small voltage transformer it can allow to measure power.
Maybe I will make a video about AC current measurement in the future.
Nice video !
Could you do next video about how to set ADC on Esp32 ?
There are videos about that available. No need for another one, I think.
what a timing man !
I was looking for an alternative to usual precision shunt. I have to measure huge variation a current from few mA to 30 amps and classic resistor shunts have theres limits
That is not easy. Most concepts use fast switching shunts for that purpose. I covered this issue for smaller currents in the video I suggested.
Just the video I needed
Glad you liked it!
on esp32, you put adc reference to 1.1v. Then use a diode between adc input and ground, and 50k resistor between 3.3v and adc input. This will set the diode voltage drop (cca 0.5v) as your referent zero. Then you can use a shunt on battery negative side without the loss of resolution. With some noise cancelation and polynomial calibration coding, you get a pretty good +/- current meter. I'm using that on a solar system with 60A both ways ;)
Interesting concept. Thank you for sharing!
Hi Andreas, do you know some chip option to measure current bidirectionally? I mean when a battery is charging and when the same battery is discharging. Thank you
Herr Spiess! Vielen dank!! This is very timely info. I am looking at monitoring the 230VRMS mains supply to my borehole pump and have now changed my plans away from the ACS714 (which I can easily get at the local hobby shop in South Africa) to the WCS1800 which I didnt know of . . . .In terms of measuring mains Voltage and Isolating it from my little Infineon XMC4500 ARM processor I am looking at using the HCPL7510 which is optically isolated, is there something more appropriate that you know of?
Maybe I will make a video about measuring AC. So far I do not have everything together. The HCPL7510/20 is for sure a candidate.
Last time a drill bit met my little finger, the outcome was not good.
Glad to see that this isn't always the case! 😂👍🍻🇨🇦
Drill bits and fingers are not a good team, you are right!
Pretty good video thanks
Glad you enjoyed it
very informative video - one followup question, what sensor would you choose to measure the current delivered to a 3 phase motor from an inverter, should I use a hall voltage on the mains of the VFD or rather a hall or in-line sensor on one of the 3 legs (phase) from VFD to motor ?
So far I have no experience with AC current measrurement. So I cannot help :-(
Hi Andreas,
in your summary you say that the "shunt" type current sensors can only measure current in one direction.
I am using a MAX9919 as the current sensor for DC Motors. By using a voltage divider I offset the output coming form the sensor, so
the microcontroller's 10bit ADC reads 512 for 0V, 1023 for maximum positive voltage, and 0 for maximum negative voltage.
In addition, I was wrong. These INA sensors can read current in both directions, too...
I have an acs712 monitoring 110v for over/under current to my greenhouse. Been perfect
Very good application. Thanks for the feedback!
Congratulations from Brazil.
Thank you!
Good One. INA219 is cheap and idle for a ( miliamp ) diy Amp Meter. Thanks for your videos.
You're welcome
Thanks for this interesting comparison, Andreas. On a side note, I have considered the ACSxxx sensors for use with a PC power supply that I would mod as an independent PS with voltage/current display. Since these puppies can deliver quite a high current, ACSxx sensor types might be useful. One possible drawback is they might be kind of "slow" if you're considering some form of overload protection. But I haven't verified that yet.
These sensors are quite fast. They can transfer frequencies of a few kHz. Mabe you consult the datasheet?
@@AndreasSpiess I've just checked again the ACS723 (one I have) and its response time lies between 5µs and 20µs (pages 6 and 21 in the datasheet @ www.digikey.com/en/datasheets/allegro-microsystems-llcacs723datasheetashx ). The response time depends on a bandwidth limiting voltage though. That might be a little too slow, IMHO. The protection I had in mind was a fuse-like surge protection, not some form of current limiting.
The burden resistor can be changed with the scale; so, the bigger reason for the different connector is the fuse. Usually when there are two different connectors each connector has a different size fuse.
You are right!
Grandioso vídeo, mis felicitaciones, debería subir contenido también en español. ;) Saludos desde México.
My newer videos get Spanish subtitles (made by an Argentinean Lady). I do not speak Spanish :-(
thank u this was awesome
You are welcome!