I hope that you'll enjoy this video. If you have any question or maybe a improvement just live it in the comment section here. Visit my webpage for more. Also, visit my Pateron site if you would like to help me. Thank you.
@UndernetSystems7 жыл бұрын
Gracias hermano, hermoso video!
@thecombatengineer70696 жыл бұрын
I would suggest that anyone who builds this makes sure that get a LINEAR OUTPUT Hall Effect Sensor. Something like the A3114 Hall Effect is a fast-switch and only goes high or low, so it wouldn’t work for measuring linear increases. I tired it and failed. No worries, I’ll get some SS49E or similar Linear Output Sensors. Great job and thanks brotha!
@sincerelyyours75387 жыл бұрын
I was looking for a current probe like this not long ago but gave up due to the high prices. This one is quite possibly the ugliest looking probe I've ever seen, but that's OK because it obviously works! Why should I buy a probe costing hundreds of dollars when I can now easily build my own for dirt cheap? I learned something today. Great job, and I look forward to seeing more from you!
@FreeCircuitLab2 жыл бұрын
Nice video brother! You should regulate the supply voltage because the output of the sensor depends on the supply. And also you have to use two potentiometers, one for zero adjust, another for calibration. Zero adjust is needed because the sensor outputs half of the supply voltage at zero field. We have to get rid of that first
@anthonycalia13177 жыл бұрын
Excellent video. Your ability to explain the concepts and circuits was exceptional. I hope to see more of your work.
@crtsuznik6 жыл бұрын
I'm surprised you didn't burn the sensor. The datasheet says it's operating voltage is between 3.0 and 6.5V
@kac35144 жыл бұрын
Can this work with multimeters that have this function
@charvakkarpe4 жыл бұрын
Wow, one of the best technical videos I've seen on KZbin. You clearly have a solid understanding of physics and electronics, cover content at the right pace, include the right video shots and animations. I liked the B-field overlay on the magnetic core, with the X showing current flowing down and the arrows spinning clockwise. I'd love a follow-up video with details on the Hall effect, and a demonstration of what happens if you move the wire around within the ring. I suspect something like Gauss's law says it doesn't matter where the current is inside the ring, but clarification would be great. I'm about to go look it up for myself.
@charvakkarpe4 жыл бұрын
Found it. It's called Ampere's Circuital Law. The line integral of B-field along a loop is proportional to the current it encloses. I had pictured an entire array of Hall-effect sensors inside one of those current clamps, but using a ferrite core to capture the field and force it through a single Hall-effect sensor makes sense. en.wikipedia.org/wiki/Amp%C3%A8re%27s_circuital_law#Explanation
@ednja4 жыл бұрын
Can this clamp be plugged into a multimeter instead of an oscilloscope? What is the maximum DC current it can be used to measure?
@UpcycleElectronics7 жыл бұрын
4:53 ...is not a transformer in the classical sense. It's a choke used to reduce/filter back emf noise from the device and prevent it from returning to the mains line ;)
@jimwyt5 жыл бұрын
What a wonderful, creative, low cost hack! This is exactly the basis I needed for a non-invasive high current monitor for a battery back up sump pump. Thanks so much for sharing!
@SteinErikDahle7 жыл бұрын
Awesome video! I actually learnt something new today about DC-clamps! Thanks!
@ELECTRONOOBS7 жыл бұрын
U wellcome, I'm glad to hear!
@artiomoable3 жыл бұрын
Thanks. good video! What max AC frequency it can measure?
@robotronix-co-il5 жыл бұрын
Tank you for the Excellent video , you just save me few days of experiments in the lab
@warshatube7 жыл бұрын
thank you so much sir, I have question if I make the DC amp clamp without the amplifier can it measure high DC current (300-400 amp)
@qps93807 жыл бұрын
So good man! I've always wondered how the current clamps worked!
@janoschlolmann88226 жыл бұрын
Very nice video, but there is still one Question: You said that the LM324 is a bad operational amplifier, why dou you think like that and which one would you recommend ??
@johnconrad54876 жыл бұрын
there are many op amps that are much faster... the LM324 is old and slow.
@loulounet7776 жыл бұрын
LM324 is basically four LM741. and we all know the 741 is an old thing. amazing at the time but way passed and very very slow. a better "general purpose" opamp nowadays would be the TL071 from texas :) very cheap :)
@lonniebates15335 жыл бұрын
Best explanation I've seen of a dc current probe.
@lenaroseguera12416 жыл бұрын
I read that the maximum supply voltage for the 49e sensor is 6.5v. how can you supply it with 9v?
@WaltonPete7 жыл бұрын
Excellent video! Love the project idea - some AC scope clamps can cost as much as a budget DSO! Great explanation and implementation of cheap, easy to source parts.
@ELECTRONOOBS7 жыл бұрын
Pete Allum thank you very much! Keep up!
@eletronicaautomotivadicass55204 жыл бұрын
Ótimo vídeo. . esse projeto substitui todas as funções do cc65? Posso usar no ramo automotivo?
@JAKOB19775 жыл бұрын
"You know nothing John Snow". (thats how i feel when watching some of these aspects in this video.. yeah my mindset is pretty limied when it comes to electronics but I do like my current AC&DC clamp meter 210E. Im such a noob I actually thought these big clamp meters was for batteries and often was puzzled why they didn't open up wider and was supprised when i finally realized you could measure current without toggling physically onto the circuit..) thx for the vid.
@ronniepirtlejr26065 жыл бұрын
When measuring DC, could it be possible to design a circuit and not use a hall sensor? Maybe something that pulses AC (low voltage of course!) Then design a small circuit that can calculate the difference in current/ resistance in dc? I'm really new to electronics I'm trying to learn schematics, chips & components Etc. I realize the hall sensor is pretty simple. I just want to know if it's possible?
@sylvainlazare11146 жыл бұрын
Thank you! I hear for the first time the principle of DC clamp probe. My question is how sensitive is it ? commercial clamp probes are sensitive to
@Taran724 жыл бұрын
This project is really awesome and yes, I've found out what to do with a bunch of half ferrite cores I got :) . I think that the improvements can be made with the amplifier circuit and the calibration...but you speak of the AD623 in your video on current sensors....can I use the AD623 for all these type of projects related to probes or instrumentation circuits? I'm not that familiar with OPamps.
@ryanshelton45455 жыл бұрын
I loved this video. Thank you for sharing, you're a great teacher.
@lupoal4113 Жыл бұрын
bravo! very useful video! about the "better" op-amp... do you have any suggestion?
@johnconrad54876 жыл бұрын
i enjoyed the video. the frequency response is very low. did you try to speed it up in any way? perhaps by adding a small cap... maye 100 pF across the input 1K resistor. it may help
@borisivanov11755 жыл бұрын
What if I need to measure 2000-3000amps? How different it make such device?
@hannnnn3107 жыл бұрын
Hi! May i ask?...How high is the max frequency of the current clamp could measure?
@ELECTRONOOBS7 жыл бұрын
Hi there. Can't remember for sure. The max freq is given by the max freq of the OPAMP and the Hall sensor. Just check those datasheets. Sorry. Keep up!
@qzorn4440 Жыл бұрын
A most excellent current clamp circuit. Do you have any suggestions on an clamp-on current circuit on a 2,300 volt AC wire? 😎 Thank you.
@maurizioghizzani57347 жыл бұрын
If i change the coil size does the sensitivity change? What op can be used to improve the precision ? Thank
@ELECTRONOOBS7 жыл бұрын
To improve the amplified signal you could use the same OPAM but in a chain connection, the output from the first OPAM to the input of the second but with smaller scales.
@sayantanmaiti25136 жыл бұрын
Sir can you please explain a little bit why did you used that potentiometer with the opamp and why you preferred the inverting configuration of opamp?
@sonyobright21066 жыл бұрын
the 49e hall sensor has a bias voltage of half the power vcc ... means that the hall sensor would output a 2.5 v for a vcc= 5v with NO magnetic field sensed by the sensor ... the potentiometre help to offset that bias voltage ...the inverted configuration help for the gain. in this case 100. witch is too big in my opinion .. a gain of 10 will be more than enough.. another strange thing is the 9v battery that is too big for the sensor. in the end the filter is wrong and not suitable for this ...good work
@apurvakalvade23015 жыл бұрын
In case if we don't want to use BNC connector and want the reading on the LCD _ then if we directly connect the output of the OPAMP to the LCD, will we able to get the display of current ratings on LCD?
@ikkeslim0077 жыл бұрын
Is there a way to make it usable to measure currents up to 70-80 amps or more? Maybe with a switch for high/low amp range? I'm really interested in making one, but i would like to measure more than 9amps! It's an relative easy to understand schematic, really love it!
@CheapskateGarage3 жыл бұрын
He's using an amplifier to bump the sensitivity up to 1V/A. You need yours to be less sensitive. You could scale the gain down to ten (he used a gain of 100). Or, you could leave out the amp and see where that gets you. Experiment measuring a known current and see what your sensitivity is.
@agaelema7 жыл бұрын
Awesome project! I Will follow this video and mount my own diy current probe . Thanks for share
@MCsCreations7 жыл бұрын
Really nice! Liked specifically the ugly tooth you put in it (at 14:07), looks an angry animal. LOL
@viekynajoan15204 жыл бұрын
Any recommended hall eff. sensor ? Thank you in advance 🙏🏻
@chuckthom70125 жыл бұрын
What do you think about using a clamp off an old timing light?
@elson2k4 жыл бұрын
Nice video ;) I was just searching for an easy way to measure and observe currents via oscilloscope and your solution gave me some ideas. Thanks! :)
@danielolmo96257 жыл бұрын
Nice video! It's been a while since I've been looking for this!
@sereenasonya Жыл бұрын
Well done Brother. Loved it.
@waqaszahid865 жыл бұрын
I am in the middle of building something similar but it is exclusively for measuring AC currents, I am using a self made current transformer with two pair of windings, after building the amplifier circuit and extracting the RMS value in a manner similar to what a non true RMS DMM does I have realized that the self made transformer with toroid core from atx power supply is very non linear and i am still struggling to find a method to resolve this problem.
@jezzapimp4 жыл бұрын
Awsome project! What sort of bandwidth do you get with this unit?
@polkijain975 жыл бұрын
Hi. Great explanation of the amp clamp. Can you point to any off-the-shelf component to integrate into the circuit that can measure 10A to 150A linearly and give millivolts as output to be read through an Arduino or any other microcontroller?
@tiagonet87943 жыл бұрын
what modification will you have to make for measure 1000A or 5000A?
@johnopfer80655 жыл бұрын
What is part number of Hall sensor you used?
@itsmekennyd2 жыл бұрын
thanks I really need to make 2000 amp one could you help?
@asmarahman92915 жыл бұрын
Hello I'm student from University Putra Malaysia from Malaysia. May I ask, for DC Current Clamp Meter, is it just hall effect ic and ferrite core only or u need copper coil around the ferrite core?
@MrRonychakraborty7 жыл бұрын
You are the Boss. You saved my time a lot thanks.
@devilvortex14 жыл бұрын
can I calibrate the clamp 1A and set the output to 0.1v?
@MrHD717 жыл бұрын
what is the better amplifier that you're waiting on?
@ELECTRONOOBS7 жыл бұрын
LM358
@SianaGearz7 жыл бұрын
Waaait. LM358 and LM324 are the same thing! Different packaging, different number of units per package, but same units inside. You can even use the extra units of LM324 to increase either noise and distortion suppression or current handling capability.
@sincerelyyours75387 жыл бұрын
Can you show us how?
@yashrewalia21165 жыл бұрын
Can you give the calculation related to the circuit for DC clamp
@Slic-Rock6 жыл бұрын
Hi nice video, what current clamp can you recommend for Fluke unit. Their clamp are expensive and have for 1mV DC = 1Amp DC and 1mV AC = 1Amp AC. I would like to find affordable clamps for Fluke 124. Thank you
@Seshagopalan9677 жыл бұрын
Once again, you made my day!
@anukeshambatkar62554 жыл бұрын
Sir can you please make a tutorial on wcs1500 current sensor which is of 200A capacity
@joycepark62994 жыл бұрын
Hi LM324 is currently not available in our area so we used LM358 but the result is kinda sketchy. Can you recommend to us other IC to ampli the result? Thank you.
@joycepark62994 жыл бұрын
and also when we try it we got a result of 0.025-0.033 V (without conductor on the magnet) and 0.099-0.106 Voltage (with conductor). Then on our second test we got different result, does the circuit really had approximately 0.025V ? Thank ypi for answering it will be a great help in our project.
7 жыл бұрын
Excellent video! Thanks for explanation! I have a Unit 201E and i will try to modify it to add a analog output. Many thanks!
@thelasttimeitried6 жыл бұрын
Really great video. Thanks for taking the time to create the project and explain it so thoroughly. By way of improvement, the letter 'u' in the word 'circuit' is not pronounced. Your English is great!
@mohammadqz89565 жыл бұрын
can I make one with an accuracy of 1mili-amps like this?
@peterdkay7 жыл бұрын
Great explanation, however I think schematic is wrong. You show a 9M/10pF in series with scope connector. As scopes have a 1M input impedance this filter has a 10:1 attenuation so maximum voltage at scope is 0.9V not 9V. I would like to see frequency response: You measure rise time of clamp by generating a 100mA current pulse at 1kHz. Easy to do using a 100 ohm resistor in emitter of transistor and drive base with 0 to 1.5V square wave. Collector current should be about 0 to 100mA square wave. (The 1.5V drive is to overcome 0.5V base emitter voltage.)
@AB-yu2tj4 жыл бұрын
It's good short and to the point. Thank you
@gunjankumar-fr8lv4 жыл бұрын
How to remove magnetic field around wire so that the clamp meter can not read the current ?
@gastarbieter7 жыл бұрын
what is your opinion about the hantek current clamp?
@ELECTRONOOBS7 жыл бұрын
It's a decent one. I don't use clamps too much. The good thing is that it is quite low price.
@hebrewhammer10006 жыл бұрын
Thank you for sharing. Great video.
@mihapeterle2045 жыл бұрын
Why inverying amp and not noninverting?
@yoramstein7 жыл бұрын
Hello mr.Electronoobs great videos you make. Just wanted to ask what 3D printer did you use to make the case for this probe?
@ELECTRONOOBS7 жыл бұрын
In that time of the Year I was using my Anet A8. Keep up!
@apurvakalvade23015 жыл бұрын
From which instrument did u get that ferrite Core?
@MunnaKumar-sc7qo5 жыл бұрын
desktop power supply or ATX supply
@apurvakalvade23015 жыл бұрын
@@MunnaKumar-sc7qo and in case if we don't want to use BNC connector and want the reading on the LCD _ then if we directly connect the output of the OPAMP to the LCD, will we able to get the display of current ratings on LCD?
@MunnaKumar-sc7qo5 жыл бұрын
@@apurvakalvade2301 yes, but you must change the gain of op-amp as per you lcd working. If you control by any microcontroller then you must use ADC value range.
@morbitalok7 жыл бұрын
how to easly adopt to 40 mV/A ? anyway great thng and movie!
@Tirdad19815 жыл бұрын
I built this but it can only measure DC currents. I can see no changes in hall sensor output voltage with AC.
@brujo_millonario5 жыл бұрын
Thank you, I've learned a lot.
@FriendlySuslik7 жыл бұрын
no se para que sirve pero lo quiero, y lo quiero ya
@MrBreak7457 жыл бұрын
can you make BMS circuit for 3 li-ion battery pack > it would be a great video
@olhalytvyn87157 жыл бұрын
yellow iron core from a atx dc power supply is no ferrite.its powder iron.it has much more high freq losses.no good for measuring device
@ELECTRONOOBS7 жыл бұрын
True!
@sonyobright21066 жыл бұрын
if your device is working on very low frequency you will get nothing in the output with the ferrite core. so what yr saying is not true ...it depends for what you are using it for ...
@sonyobright21066 жыл бұрын
@@ELECTRONOOBS not true ... it depends on frequency....
@sonyobright21066 жыл бұрын
the 49e hall sensor has a bias voltage of half the power vcc ... means that the hall sensor would output a 2.5 v for a vcc= 5v with NO magnetic field sensed by the sensor ... the potentiometre help to offset that bias voltage ...the inverted configuration help for the gain. in this case 100. witch is too big in my opinion .. a gain of 10 will be more than enough.. another strange thing is the 9v battery that is too big for the sensor. in the end the filter is wrong and not suitable for this ...good work
@next82267 жыл бұрын
Love ❤️ your all videos you grate😍😍😍😍😍😍😍😍😍
@zikermu4 жыл бұрын
Thanks a lot for this great educationnal video .
@satviksharma37224 жыл бұрын
This was a great video!!
@wgm-en2gx7 жыл бұрын
Nice explanation. thanks.
@georgedsuarez6 жыл бұрын
Excellent video!
@EASYELECTRICALENGINEERING Жыл бұрын
What is Kurant
@agentk39844 ай бұрын
The way you say "Cirqweets" really tickles me.
@sootyq5 сағат бұрын
Hack into a old AC/DC clampmeter guts. I need a DC current probe, and using a voltage probe and a series resistor will wreck my experiment on my AC capacitor cct. No resistance can be used.
@0dium.5 жыл бұрын
HAL sensors are great components
@bigt1219477 жыл бұрын
thank you for your time.
@eb26154 жыл бұрын
Be very careful when using current transformers if you leave the secondary open circuit you can generate very high voltages when there is a current pulse or surge always terminate the secondary with a load resistor or are use back to back senders ect
@FyaaahS6 жыл бұрын
Awesome video!!
@mojtabajamal34574 жыл бұрын
very nice ...thank you
@genuino-qo5yq7 жыл бұрын
Pls make an arduino based switching power supply
@2008007flavius7 жыл бұрын
Whats up my friends!!!!!
@vysakhav6 жыл бұрын
Thanks ,very helpful
@ihabhamad82906 жыл бұрын
you are a perfect man :)
@kostaslaza126 жыл бұрын
awesome keep going!!
@DavidLeeMenefee7 жыл бұрын
Nice video. Thumbs up...PEACE
@SianaGearz7 жыл бұрын
Small planet, eh?
@alfredseaman27966 жыл бұрын
Thank you so much
@therider39394 жыл бұрын
I think that's a iron powder core not ferrite
@two_number_nines7 жыл бұрын
ur clamp is actually better, because the core handles high frequencies much better than this iron sheet core industrial clamp
@garethronaldo86927 жыл бұрын
Nice
@francoisBonin-phils4 жыл бұрын
if it was really ferrite , you could not cut it with a hacksaw , anyway , your video is great...