*Warning* : The explanation in this video is not correct. Electrons or any charge is never attracted or repelled by magnetic field. Magnetic field exerts force on, say +ve charge (q), by this formula F=q(VxB); So the force exerted by magnetic field causes the +/-charge to move perpendicular to the direction of motion and also to the magnetic field. For proper explanation checkout this video kzitem.info/news/bejne/2Zh9y4GuaayAopg
@dogphlap6749
6 жыл бұрын
The magnetic field, the current created by the voltage applied to the Hall affect device and the force acting on the electrons should be all orthogonal to each other. So on your white board the north pole of the magnet should be behind the white board and the south pole in front. Fleming's Left Hand Rule (for motors) gives these directions (it uses conventional current flow, even though that was subsequently shown to be the opposite to reality) would have the positive of the applied voltage at the bottom of the device illustrated with the negative on the top (if the negative of the Hall voltage is to appear on the right of the of a Hall affect device as illustrated).
@MrZak-rf3vq
Жыл бұрын
So this entire 11 minute video is incorrect?
@JayLikesLasers
5 жыл бұрын
Wouldn't the electrons be redirected in the direction into the whiteboard? Because F=q(E+v x B) where there is no external electric field, but the velocity is up, and the magnetic field is to the left, and the electric charge is negative. So by cross product I expect the applied force would point into the page.
@phillipwylie7327
6 жыл бұрын
Do you ever get a Hall effect when you walk along a corridor?
@RCModelReviews
6 жыл бұрын
No... but I really a-door walking down corridors anyway. :-)
@gcewing
6 жыл бұрын
If there are three doors at the end of the corridor, you get the Monty Hall effect.
@NinuRenee
6 жыл бұрын
If there's a group of smokers you might see small Hall effect
@ibzanruheta
5 жыл бұрын
Ok
@789563able
5 жыл бұрын
If there is a hot babe at the end of the corridor, I get a Hall effect in my pants.
@Hammett474
6 жыл бұрын
Nice quick video. I believe you have the direction of the magnet (magnetic field) mixed up. In the orientation you show the magnetic field is parallel with the movement of the electrons. The cross product between velocity and magnetic field would be zero. The magnetic field would have to be either into or out of the board.
@analog56x
6 жыл бұрын
i love these electrical theory videos Bruce! cheers!
@ChineseSweatShoppe
6 жыл бұрын
It's not a theory...
@suddhasattasaha4793
Жыл бұрын
I explained it in a much better and simpler way. kzitem.info/news/bejne/pap_4JN-enWEg34
@micksharp1169
6 жыл бұрын
Sorry but I've got to say this: always you get some one trying to boast how good they are ( electrons don't do that), COOL it you guys, Bruce was using the simplest explanations as to what hall effect is, so that everyone can understand. He's not doing a course in advanced electronics.
@dogphlap6749
6 жыл бұрын
When trying to teach there is an obligation to get it correct. I'm sure Bruce once knew this stuff and 5 minutes spent revising would have resulted in a video that was substantially correct. This video is mostly incorrect.
@Jimgoodwin846
6 жыл бұрын
mick sharp well said. I know nothing about electronics, this is WAY over my head, but Bruce has a real skill at explaining a subject that is mysterious to me. To all those who want to correct him...get your own channel.
@jhart1945
6 жыл бұрын
Jim, AMEN to that!!!!
@EdAgers110
5 жыл бұрын
Jim Goodwin Well stated!
@rayferguson4556
5 жыл бұрын
just curious what were some things that were incorrect?
@andresabrego269
6 жыл бұрын
Hello Bruce! Great video again, love the whiteboard! Would love to watch a whiteboard video about optimization of power combo, from props to batteries, going through motors and ESC's, taking into account the weight or flying characteristics desired. I know it's way too much for your small whiteboard and your almost finished markers, but you have managed yourself to explain so many things that I would think this is not a big task for you! Thank you for your passion!
@suddhasattasaha4793
Жыл бұрын
I explained it in a much better and simpler way. kzitem.info/news/bejne/pap_4JN-enWEg34
@hotarticwind
5 жыл бұрын
This is an incredible explanation of a microelectronics concept that I've had difficulty grasping in the past. Thank you for taking the time to make it clear. Cheers!
@suddhasattasaha4793
Жыл бұрын
I explained it in a much better and simpler way. kzitem.info/news/bejne/pap_4JN-enWEg34
@thomasdollenmayer4073
6 жыл бұрын
It would be cool if you "electrically " took us from the radio transmitter we hold all the way through the prop spinning on an electric plane.... and everything in between. These are great and we learn so much!!!!! Thanks Bruce!
@ThatGuy-nv2wo
6 жыл бұрын
I don't like you saying that the electrons are attracted to the North pole as they're not really attracted to either. For the electrons to be attracted that way you'd have to have the north pole of the magnet behind the whiteboard (away from the camera) and the south pole in front of it (towards the camera).
@didactylos4diddy474
6 жыл бұрын
I love your disclaimers at the end of technical vids. I suppose they cut down on the geeky nit-picking a little but probably not enough. ;)
@Ultrarc
6 жыл бұрын
awsome
@chirayujoshi1189
5 жыл бұрын
Isn't the movement of electrons inside semiconductors perpendicular to the plane of board when magnetic field is parallel to the same plane?
@Hotwire_RCTrix
6 жыл бұрын
Where are those 3D whiteboards when you need them?
@SianaGearz
6 жыл бұрын
I suppose will be commonplace enough any day now that AR and VR are becoming more developed and more widespread - especially given considerable 3D rendering prowess of smartphone/tablet processors.
@aeroscience9834
6 жыл бұрын
Actually the magnetic field falls off as 1/r^3 (not 1/r^2). Remember, there's no monopole term in the expansion of magnetic fields unlike electric fields
@anatomicallymodernhuman5175
3 жыл бұрын
A channel where the comments are as educational as the videos. That’s for the correction!
@6toeNL
6 жыл бұрын
Love these types of videos. Thanks Bruce!
@deelkar
6 жыл бұрын
Actually they are pushed to the side by the magnet. Which side depends on the pole of the magnet that is closest to the sensor. For the shown deflection the magnet would have come from the direction of the pen on the board, not in the plane of the board. Apart from that a very good explanation.
@azgarogly
6 жыл бұрын
Well, the electrons themselves are not much affected by the magnet. The moving charge is what gets pushed by a magnetic field. So you have to get electrons moving for them to be affected. That's one thing I noticed.
@chasemallory9214
6 жыл бұрын
Hahaha, technically true, I guess that was one of the details he left out to simplify, which I understand as it is not crucial to understanding how hall effect sensors work. Good'ol right hand rule cross products.
@azgarogly
6 жыл бұрын
One thing I think is most important in educational products: when statement is simplified, it cannot contradict scientific knowledge. "Electrons are attracted to magnet" is this general form is a false statement.
@EdAgers110
5 жыл бұрын
deelkar Really!?! All I can say is.... K.I.S.S. - Keep It Simple, Stupid! C’mon, man! Most of us just want to know how our gimbals control our planes or drones! We don’t want to read a two-inch thick book about the effects of magnetism on a semiconductor. We just want to keep our stuff in the air.
@TheRoulette77
6 жыл бұрын
Thanks bruce...helped me understand my hall effect distributor, on my truck
@edvaioli7340
4 жыл бұрын
I've never seen the letter "S" written bottom to top. Great video: simple explanation of a complex subject.
@xichenjiang7799
3 жыл бұрын
I thought electrons move according to RHR presence of magnetic field (assuming it has velocity)
@paulkafig5788
3 жыл бұрын
You are correct. I was wondering if anyone else would bring that up. Electrons are NOT attracted by a magnetic field. They will experience the Lorentz force, however. Nice guy, but some of the stuff he says is cringe-worthy. :-)
@Paddington2000
4 жыл бұрын
Thanks for that video, this is certainly the best explanation I've seen so far.
@miinyoo
Жыл бұрын
Such an enthusiastic conductor. We love you for all the conducting you do.
@johnswanson217
8 ай бұрын
I'd say semiconductor as his lecture affects my knowledge more than other conductors.
@JohnBond-m4t
22 күн бұрын
Wye bother? Does it relay matter?
@tiagopadua
6 жыл бұрын
Also, some ESC for brushless motors (most of the sensored ones) use Hall effect sensors as a feedback, to control timing.
@Asyss_Complex
6 жыл бұрын
Tiago de Pádua Yes, I got one by taking apart an old computer fan to make a hot wire detector. Very useful.
@HowToDIYRc
6 жыл бұрын
Thank you, Bruce you explain things so well keep up the whiteboard we love it :D cool you talk about vintage ESC pod still have a few Tamiya vintage rc car ESC controlled by a servo and still work after 30 years
@samuelcarvalho3691
Жыл бұрын
You sir, are a wonderful teacher. I can tell that you love knowledge and that you enjoy sharing it with others. You've made this concept very easy for me to understand. Thank you so much, God bless!
@stefanoosterhout
6 жыл бұрын
That is nice video, and I did learn why this is used rather than a potmeter. However, the explanation is very very very very simplified. In actuality, electrons aren't attracted or repelled my a magnetic field, but moving electrons experience a lorentz force while going through a magnetic field. The magnetic field would have to be perpendicular to the whiteboard in order for it to work (but it's kinda hard to draw).
@azazelhcs3752
5 жыл бұрын
Everyone seeing this will go, run think they understand it, write it as attracted in the report, their third year lecturer will see this, slap their face and bang their head on the table. Thinking... Did they learn anything at all. Remember, Physicists feel that physics is a crucible degree, its either for people or not. This explanation will make many think that it really isn't for the person who was just confused.
@BarryBranton
3 жыл бұрын
Electron Flow Model versus the Convention Current Model.
@joecies
5 жыл бұрын
Learned something today! Thanks for the video!
@nitin4171
3 жыл бұрын
Thanks, you explain very nice I understand immediately
@EleanorPeterson
5 жыл бұрын
For the people who don't like the lack of scientific rigour of these mini-explanations, please don't be too hard on Bruce. He's presenting 'boring' information to the layman (and one woman). Of course the science may not all be defined in sufficient detail to suit current theory [pun intended], but that doesn't matter. Getting things vaguely wrong(-ish) doesn't matter either. Defining terms EXACTLY and CORRECTLY would take up far too much time and bore non-specialists to the point of turning off. And it still wouldn't satisfy the pedants, who'd be happier on a serious forum where they could discuss things at a level of their choosing. A good example of how tiresome things can get is to try to explain how a wing works. What creates lift? Tell us about boundary layers and laminar flow and pressure differences... And the argument about what REALLY happens on a wing's top surface will go on and on and on and on... Nobody agrees even to this day, so best just to shut up and use the explanation that we all still remember from school but which so INFURIATES scientists and aerodynamicists. Just let it go, get outside, and fly. I don't understand all the theory, but I've been designing model aircraft wings for decades. Never had a failure due to lack of technical insight. If it looks right, it'll fly right, right? Right. If you want to work in the R&D department at Airbus or Boeing, go to university. Make friends with Osborne Reynolds. Wallow in formulae, minutiae and equations, but please don't expect me to share your fascination with such dull stuff on KZitem. Bruce chooses to discuss things at a level even a biscuit such as I can understand. It's his Channel. It's not The Open University. He can do what he wants, and he always makes it clear that he's explaining things for disinterested (but not uninterested) parties. His basic approach to potential [pun intended] tedium and yawning is to whet people's interest and move on. Quickly. Before they fall asleep. IT DOESN'T MATTER THAT PEOPLE MAY BE GETTING INCOMPLETE INFORMATION ABOUT THE SUBJECT. If they care enough, they'll dig deeper by themselves and clarify/correct all the points that (quite understandably and perfectly reasonably) upset the experts. For everyone else, well, they'll get on with their lives just the same as before, BUT they'll take with them a simple understanding of a new topic, and anything detailed and fussy - be it ever so wrong - will have soon been forgotten. Calling 'mass', 'weight' is a criminal offence that carries a sentence of some gravity... So don't fret about peeps passing on false information to their peers and spreading scientific inexactutudes, dudes - just be grateful that there's a little bit more reason and science in the world, and not quite so many magic beans.
@RoyAndrews82
4 жыл бұрын
So if a magnets south is positive, does that mean the Earths south is negatively charged? The amplification is the source voltage to the amplifier, so when the signal goes into the amplifier, it's come out as whatever the max voltage for the amplifier is... It would have to be the signal plus the supply voltage for the amplifier, the total voltage.
@Ekozip1234
2 жыл бұрын
I kept the hall effect A3144 near a power supply transformer for months. I checked, it was all broken. The response to the magnet is wrong. Is there a connection? (sorry I use google translate)
@stevesloan6775
Жыл бұрын
I’m really struggling to find anything on Mr Hall on KZitem. Seems a bit like how Tesla wasn’t talked about when I was doing my Australian electrician trade school in the early 1990s.
@omeransari6894
3 жыл бұрын
thanksss mann :))
@JimTheZombieHunter
3 жыл бұрын
Oh my. I'm not a spring chicken anymore and have to be mindful of what four-eyes I'm wearing to see what: When this vid was suggested I nearly had a stroke .. Don Cherry is explaining the Hall effect? Since switched to thicker lenses.
@binaryglitch64
3 жыл бұрын
This is so terrible... drawing starts out looking more like a reed switch given it only has two leads instead of three, the explanation is drawn out and not spoken in clear words, 'uh' is transmitted at an unbelievable rate. Gosh, I hope that 101 doesn't imply that this is part of an educational series cuz I'd hate to be in your class. Sorry I'm so harsh, I'm just being honest. Happy wiring future EEs.
@xapk
2 жыл бұрын
Thanks for the clear explanation! So much better than the usual CGI + cheesy music crap. Can't beat old school white board....perfect!
@mydarxide
6 жыл бұрын
Your whiteboard videos are my favorite. Keep em coming Bruce! :)
@xapk
2 жыл бұрын
Hi Xapk here again..... just wondering if you know how Hall effect is used in a torque sensor. My e bike's conked out and suspect the torque sensor. Various wires going between the sensor and the controller 6 in total. Just wondering if there's an obvious function of them all which I could test out. One pair is likely to be just a simple DC current.
@abhishekgovekar5542
4 жыл бұрын
The electrons don't get attracted by the magnet directly (Lorentz Force!!!) ...... Because magnetic field affects the flow of electrons by applying a force in a direction perpendicular to both magnetic field and direction of current ...... This is not the correct explanation for the Hall Effect
@hoytvolker3
4 жыл бұрын
Simplifying stuff is a skill , RESPECT.
@zedoc9202
6 жыл бұрын
Thanks for the great video. This is the best explanation I've see so far. Looking forward to more of these theory videos.
@CristalPiedra
2 жыл бұрын
Good side, is entertaining and sort of explains the Hall effect. Room for improvement: electrons are NOT attracted to the magnet (nor repelled by it), the experience a force perpendicular to their velocity and the magnetic field. In the video they would not arrange themselves on the sides but in the back of the whiteboard, leaving positive ions in the front (as they would do with semiconductors too).
@IH1940HAY
3 жыл бұрын
I find dozens of wiring diagrams for connection to an ardino but none for connecting to a mach 3 BOB, is that they cannot act like a Normally Closed switch, or they just don’t work on my type system. I really need a wiring diagram for my system. Thanks.
@waynec369
Жыл бұрын
New policy. When a video gets interrupted for an advert and I must wait more than 10 seconds for the advert to load, I leave a dislike for the video. Furthermore, when I am recommended a video more than twice that I have alread seen, it gets a thumbs down. My recommendations are simply a treadmill anymore. YT isn't listening to me, so maybe the content providers can get their attention. It's nothing personal.
@wayneyadams
3 жыл бұрын
I disagree with his curved electron path. The electrons would curve to the side until they reached the edge of the conductor, but they would not curve back again. The force the electron experiences is called the Lorentz Force, and the equation is F = V X B, known as the vector product, outer product, or cross product. The direction of the force uses a simple right hand rule. Point you fingers in the direction the POSITIVE charge is moving and curl them toward the direction of the magnetic field (out of north pole into south pole). Your thumb points in the direction of the force. Since electrons are negatively charged they experience a force in the opposite direction. In his picture, the electrons are travelling upward and the magnetic field is pointing to the left, so point you fingers up and curl them to the left. Your thumb points out from the whiteboard. But electrons are negatively charged so the electrons would experience a force pushing them into the whiteboard or away from you.
@donaldhollingsworth3875
4 жыл бұрын
Are not proximity switch be better if you have room. most machine tools which I have run all used proximity switches or scales. All the video's I've seen that the Hall Effect Magnetic does not have the stop the magnetic parallel to the Hall Effect Sensor but only as far as it needs to to make or break the circuit. Where as the proximity switches must be in line with each other in order to make or break the circuit. All of our machine tools used proximity sensors or scales to make or break circuits. I would never use a limit switch or Hall Effects sensor unless I had no other choice to do so. Proximity switches are so much more precise & reliable that I'm surprised to find so many people touting the great benefit of these out of date switches. When I re-control a machine I always use proximity switches.
@Abraham-mt7mo
Жыл бұрын
You are the teacher ive been missing my whole life idk how kany videos ive randomly watched but you hleped me understand so easily ive been wondering lately what effect a magnet would have on current, thank you !!!!!! Is there any way i can get specific answers on certain questions not normally asked?
@alwaysdisputin9930
3 жыл бұрын
i think maybe magnets don't attract electrons google stupidly sent me this degree level paper that is terrible at explaining things but i think maybe it knows what it's talking about when it says: "The Hall effect arises from the fact that a magnetic field causes charged particles to move in circles." www.damtp.cam.ac.uk/user/tong/qhe/qhe.pdf i think maybe the electrons move sideways?
@theshivelyfamily
5 жыл бұрын
Fascinating video - even if you have no interest in RC models.
@HeyChickens
Жыл бұрын
I would hypothesize that the hall effect might not be measurable without using the semiconductor, much the same way you couldn't measure the pressure difference between the water at the surface of a pool and the bottom of the pool by using two hoses filled with water. Since gravity is creating the pressure difference, and the water in the hoses weighs the same as the water outside of the hoses, there will be no pressure difference created. Unless you fill the hoses with something other than water, which then you can measure the difference in pressures created by gravity's disproportionate pull on the heavier substance (the water). So I would suspect that that same hall effect that is pulling electrons towards one side of the conductor, would also equally pull electrons away from the conductor being used to measure that effect, unless the effect were disproportionately stronger in the material being used. Which it is apparently. So that's something interesting to take into account here.
@paulinfrance5
6 жыл бұрын
Wow 3 minutes in, who taught you to write 'S' from bottom to top,,, ohhh you are on the other side of the world,,,
@AINews13
5 жыл бұрын
Love your energy! Kept me interested in the Hall Effect an makes me wonder about if one could derive electricity from a field as weak as .5 Gauss?
@ipodtouch470
5 жыл бұрын
Depends how much coils you have, look up faradays law for further research interesting stuff.
@shitheadjohnson2797
2 жыл бұрын
maybe if u jacked enough power into it, might increase the effect a bit, but bit of a waste of electricity unfortunately.
@hollowneedles
3 жыл бұрын
Has anyone ever mentioned that you look a bit like a bearded Bryan Cranston? Makes me think of his character from breaking bad, but with a British accent and an interest in electronics instead of chemistry. All you need is some shades and a pork pie hat. ;)
@MarkInLA
4 жыл бұрын
Is the word 'Hall', the scientist's name, like Volta and Ampere, who discovered it ? Or, is is referring to a sort of hall in the electrons/device or such ?
@ricardogondim2346
4 жыл бұрын
RCModelReviews.. So.. is it possible using it as a Switch? Almost like a Reed Switch?
@AbidAli-hb5ut
4 жыл бұрын
Dont you think that the produced electric field must be perpendicular to the applied magnetic field? In your explaination, both fields seem to be in the same direction !!
@MarylandFarmer.
5 жыл бұрын
Is there a way to tell which wire is which? I have a new wheel speed sensor to install, but the company changed it with no plug and told me to just splice the wires together. I think I know but I'd like to know for sure I'm wiring it right the first time.
@JohnBond-m4t
22 күн бұрын
When you speak of a conductor, it derails my train of thought. That is why I choose to be an engineer. 😅
@sitaramkakumanu
4 жыл бұрын
but the induced electric field must be perpendicular to both applied mag field and current. according to this video it is parallel to applied electric field. how is this possible??
@sempertard
3 жыл бұрын
One-stop tech info shop. What ever the subject, if Bruce can't explain it, it's not possible.
@fredsalter1915
2 жыл бұрын
+3 for the Aussie accent!! Love from Sacramento, California sir!!!!!!!!!!!!!!!!!!!
@christopherr7195
5 жыл бұрын
You speak so quickly
@pmthomson
5 жыл бұрын
Half speed is in the settings, or you could rewatch it.
@StacemanFPV
6 жыл бұрын
Love these types of vids... Always fun to learn how everything works.
@eternalstud3nt
2 жыл бұрын
It seems like the direction of the magnetic field you are creating with the magnet placed there will actually make the electrons go downwards instead of going to the right. Other than that, great video.
@johnross3752
3 жыл бұрын
I'm running stepper motors that run on pulses . Can a Closed loop hall effect current sensor be used to count pulse/steps of the motor ? And act like an Encoder?
@McPinpin
4 жыл бұрын
I think that you made a mistake. The magnetic field decreases by the cube of the distance, not the square. But it was interesting, thanks
@engineerSalih
6 жыл бұрын
Fantastic video, I looked everywhere for good explanation and I couldn't find a better one! Thank you for uploading.
@paulnolingo
5 жыл бұрын
Good explanation sir thanks for sharing
@phasorsystems6873
4 жыл бұрын
Got a circuit you wanna build? Test it out here first. Check out androidcircuitsolver on google
@jamescullins2709
2 жыл бұрын
how repeatable is the output? If I used a comparator and move a magnet near and away, with it trigger at the same distance each time? thank you.
@mickthebass6086
6 жыл бұрын
Nice one Bruce..Thanks.
@OZSCQUADS
6 жыл бұрын
wow. another great video. Very educationsl Dumb question for you. What is best order to remove connectors from a battery source?
@lutherniheu9399
5 жыл бұрын
disconnect the negative side first as that is the side electrons are moving out
@adonaivictor4493
4 жыл бұрын
What if you turn a magnet into a pyramid and point it out from the battery will the energy travel up from the tip of the pyramid up towards the earths magnetic field ?
@bryanfrancisco-t7x
6 ай бұрын
This kind of teaching we need in our school system. I really believe when someone explain the things very well, he really understood the subject... I was trying to understand the principle of our turbine meter which has a pickup coil and a rotor. And I'm not sure how the pulses are generated. Now it's very clear to me and i know how to troubleshoot the equipment. Thanks sir.
@kyleericludwig
2 жыл бұрын
this is incorrect. the north pole does not attract the electron. i works at a perpendicular position. still a good video but will cause some confusion
@manosst4711
2 жыл бұрын
Why don't university teachers explain these as simply and clear as you?!
@lucientjinasjoe1578
Жыл бұрын
Half effect, reed switch, Flynn path, all are flux manipulation
@khalilalani2707
5 жыл бұрын
Hello, please why we connect resistor between supply and output signal in hall effect circuit ?
@eco-beehive
3 жыл бұрын
Thanx. That was informative and fun. Well done.
@cosmosorigin9572
4 ай бұрын
walter white stopped cooking chemistry and is after electronics now?
@EarthScienceEnjoyer
6 жыл бұрын
you explain it really well!
@andrewgoss6170
2 жыл бұрын
Hi Bruce if a engine used reluctor and hall effect sensor should the ecm have two setting reluctor and hall efect
@adrianwilliams763
6 жыл бұрын
Thanks Bruce, makes it simple to understand.
@venkataswamyg4151
Жыл бұрын
Excellent teaching about sensor sir ,thank you sir.
@Automationacademytv
4 жыл бұрын
One of you follower hopefully i can get a thumbs up from my idol
@smartchip
5 жыл бұрын
Thanks, God bless,
@AeroCraftAviation
6 жыл бұрын
I know it's not really related to the Hall Effect, but I was wondering when and if you will be reviewing more DLGs. I'd like to hear your opinion on some begginer models like the Elf and the HK Raven.
@GroundControlRC
6 жыл бұрын
Soooooooo......if your looking for long lasting gimbals, get ones that use the hall effect rather than potentiometers? The reason for this is that the lack of mechanical friction in hall effect gimbals will dramatically increase the lifespan of the gimbal. If I understood that correctly, well done! I hope there is not going to be a quiz on this material ;-) Thanks and Happy Flying!
@pboston6RR
3 жыл бұрын
A parallel benefit is that I can brush up on my British. 😂.
@BAMBOOM2021
10 ай бұрын
You are wrong on that. They flow in through the positive and out the negative.
@NETBotic
6 жыл бұрын
Will hall effect work in a room, or do you have to be in a hall?
@MrGarcon98
6 жыл бұрын
thanks I came here cause i have been having many failures of a 3 wire hall effect that is made to use with a vw speedometer cable turning a hall effect with 3 wires and gives the signal to the speedometer MADE BY VDO company ,,,the hall effect works fine when its new ! and in about lets say 6 to about 9k miles fails ? the speedometer pointer becomes very erratic and not staying on the speed your actually going , and fluctuations of over 30 miles per hour happens , driving me nuts cause cant tell at what speed your actually going anymore ,,,,ok install a new one it works for about the same and fails, they keep doing that and VDO is not trying their best to say that their hall effects is failing ? they seem to want to go around the bush ,,,so i test the hall effect by powering the red with 12 volts dc black is neg ,then dvom red lead goes to the white of the hall effect and the other black com ground spin it by hand very slow its not showing 12 volts at all or opening either as i turn the shaft i just get a fluctuation of various low volts reading and it never goes to OFL ,,,so it never opens , i dont know how they are made but i keep returning them and get another but this gets old fast ,,,what could go wrong inside these things that they dont want to talk about ? thank you for sharing your video ,,,,
@SianaGearz
6 жыл бұрын
Maybe an engineering defect causing thermal failure due to ion motility or maybe electrostatic shock? Because you know if you have a PC, the fans in there are brushless fans, so to control pole switching they have an internal hall effect sensor inside the motor switching 4 times per revolution at 1000-4000rpm, and i have never not once seen one fail - either the fan fails mechanically or on the H-bridge, never on the hall effect sensor, and these fans can run for an eternity, most of the ones i have have been run for 10 years and maintained mechanically. The hall effect IC is fundamentally not expected to be a weak point of hall sensor based designs. I suggest first excluding that electrostatic damage occurs to the sensor, maybe suppress it with an inductor or clip-on ferrite in line with 12V input and a capacitor across 12V input; as well as if possible establishing what temperature the unit will reach in-situ.
@kayak347
5 жыл бұрын
The magnets are coming loose ?? It's almost always in anything a mech failure
@Silkroads733
Жыл бұрын
I'm very slow at grasping anything in the topics of physics but what I always tend to do to help me grasp it is to look at the foundation of most all things which is the table of elements I think we are on 118 of them, also I remember the fact that as humans we try to control things for ease of use so for instance if we have 600 volts power source and all we want to do is power a 60 watt light bulb we need to find a way to step down the power and obviously that's where all the components like capacitors and semiconductor come into the equation.
@suddhasattasaha4793
Жыл бұрын
I explained it in a much better and simpler way. kzitem.info/news/bejne/pap_4JN-enWEg34
@lambda4931
6 жыл бұрын
Very interesting! Thank you
@TSulemanW
5 жыл бұрын
Loud speeker device principles
@vilsiran
5 жыл бұрын
No
@rojanalexeiv.granado581
4 жыл бұрын
You're like a teacher. Are you a teacher. I wish you were my teacher
@hammiehammie7935
2 жыл бұрын
Learning the Hall Effect from a bloke in a flannel. Love it :)
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