Learning about PCB Electromagnets
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- Опубликовано: 31 июл 2024
- Trying to attract metal using a PCB Electromagnet Coil! flexar.io/products/sticker-ac...
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In this video I tried to answer the three most common questions I get asked! 👇
Q1. Can two flexible pcb actuators attract/repel each other?
Q2. Can you use a magnetic viewing film to observe the magnetic field of pcb coils?
Q3. Can you attract metal with a PCB coil?
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Наука
Love the innovation from your channel! Great vid
If you consider using them as actuators, a voice coil design like the one on the hdd drives would be more efficient. Using the Lorrentz force instead of magnetic force. Cheers!
Maybe you could use the ferrite sheet at high frequencies, connecting both actuators in opposite phase with each other.
You'd be running them with sinusoidal AC, so they should attract/repel each other depending on the phase offset that you specify.
If the ferrite material works better at high frequencies, this should take that advantage :)
and maybe stack 2 or 3 - connect in series
It'd be interesting to run a large frequency sweep (sinusoidal, up to 1GHz) and see what are the resonances for different setups of coils and backing materials. Basically tuning these as an antenna.
To do this you could place two coils near each other, one of them receiving the frequency sweep, the other one recording amplitude with an oscilloscope.
I think higher frequencies have higher energy but its have low wavelength its reduces the power of attracting things on the other hand :
Higher frequencies is good for data transfer and wireless energy transfer as we seen in FRID. SATA cables.
Cool experiments! Waiting for the next project!
Thank you! :)
Great idea.
This is so interesting and cool
Guys, he did it! Nice job Mr. Bugeja!
A video full of interesting concepts😃
Thank you for content
Great video as always, it's interesting to see you content. Love from Turkey
Thank you very much! :)
Love the stuff you do man, really pushing the boundaries of what people can do at home with all these cool new technologies!
Perhaps unforeseen advantage of using the large metal cores: You could put more power through the coils than you usually could as they now have a chuffing great heat sink! Especially the ones with the core "behind" as there's a big surface area to pull heat
Ope just got to the part where the tape melted!
definitely! i think the shape of the core can also be improved to act as a 'better heatsink'
Good job! 👍
You have to try using magnet wire,(very thin) coil with ferrite material with thickness of may be 2-4 times flexar. Or even thin if possible... May be it can be use in any future projects or anything...
@Carl Bugeja Need more cool videos!!! like this one
"First paperclip held by a PCB" :-)
Great stuff!+
Good job!
As the PCBs are really thin, what if you stack several of them? That should increase the flux, right?
Hi, can we make it pulsatile? and how we do in your opinion?
Actuators for micro RC planes...excuse me what? How is that a thing i knew nothing about?=0
Would a flexar either side of a core (maybe wired opposing each other) make it stronger . My thought was it would boost each pole which would also increase the magnetic force?
I wonder what use a multilayer flex pcb would be
Cool video, thanks :)
can we use this pcb coil to make guitar pickups?
Have you a Build Video from the Magnetometer? :)
Do you know if is possible to use flexar as inductor coil or a transformer for high voltaje circuit?
Yes it can be used as an inductor.. one cool application is inductive proximity sensing. I have also seen people use pcb coils as transformers
Could you use the change in inductance to identify metals, for example to sort coins?
if the change in inductance is significant it can be used to identify metal yes.. for coin sorting i'm not sure - but it could work given that the position of the coin is fixed so that coil always read the same location
Getting some great Project Farm vibes from this video. 😄
Clunky graphs needed :)
@@gth042 Need the "We're going to test that!"
Hi Carl. Can you tell me what OLED display you are using on your magnetometer at 50 seconds? Thank you.
it says literally on the board
What the heck.. Not shown to me on youtube. BLAST! Hi Carl.
What would happen if we stack the pcbs for about 5 mm? Would that increase its flux?
Thinly related: Oceanic OC-118n that was a "cheap compatible clone" disk drive for Commodore 64 used printed coils on motherboard to form the stator of disk rotating motor.
Op bhai
i think multiple layers of PCBs have hole in center joined in series on single ferrite core can increase the power of attraction and also reduce the heat because of hundreds of turns. 😋
The heating problem is probably not helping your magnetic field any, cooling them off better might help them
Next project: FlexAR as an inductive heater / inductive power supply?
Nice
How about a drop of WD-40 and a drop of ferro fluid on top of the coil with a light ring to detect the magnetic flux? (Like a ferrocell) How about AC through the coil and a tiny drop of mercury or bismuth crystal as the armature? How about a whole row of these coils moving in a peristaltic motion to move a foam boat like tiny paddles?
Love from Turkey!
It's hard to see Turkish people watching (and commenting) theese content. I am from Turkey too, and I felt proud when I see this comment.
@@catinacult Neden hiç içeriğin yokken 54 abonen var merak ettim şimdi?
@@catinacult Açıkçası ben de etkilendim. Bir abonen daha oldu.
A doubt with piezo driver?.
8:33 xD
Maybe they also could be used as a proximity sensor.
they can :) someone already tried it ruclips.net/video/aJU7GkJ75jM/видео.html
Can you also try it with a permalloy tape instead of the ferrite sheet (or one of the other high magnetic permeability en.wikipedia.org/wiki/Permeability_(electromagnetism) ) please ? Also I wouldn't call flexar a voice coil actuator (just air coil actuator), voice call actuator are actuator which are using the lorentz force as a working principle.
This is where the physics definition deviates from the electronic engineering definition. IE in physics any old piece of wire with a current flowing because it produces a magnetic field, is an electromagnet. In Electronics an electromagnet has to be capable of doing a (mechanical) job. There are still "air core" inductors and electromagnets in electronics though.
This thing could actually be useful
You should also try at different frequencies, might see different results,😮😞
For the coil to coil test multiple frequencies were tested 🙂
You need more layers on the pcb
Next time with nitrogen cooled metal core 😎
👌👌👌👌
voice coil is an application, its still an electro magnet, the core is air
it makes magnetic field, by the coils, no matter what the core
induction pan is still an electromagnet, well, any coil is an electro magnet
you have conflicts all over the places, up and down
induction hopper
air core electromagnets are a thing. ;) Technically, I think they are still electromagnets.
try with thermal paste. 😂
i should have tried that yes :P
It's funny how useless these Flexars are, in every video the projects either don't work or perform poorly. Still watch it though because its right in my alley of interesting topics. I wish you'd manage to make something useful and working out of them though.
This lol
First 🥇