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 :)
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.
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!
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
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...
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.
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.
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
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 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?
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?
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.
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.
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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.
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!
Cool experiments! Waiting for the next project!
Thank you! :)
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'
Guys, he did it! Nice job Mr. Bugeja!
This is so interesting and cool
A video full of interesting concepts😃
Great video as always, it's interesting to see you content. Love from Turkey
Thank you very much! :)
Great idea.
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
Thank you for content
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.
Have you a Build Video from the Magnetometer? :)
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.
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
I wonder what use a multilayer flex pcb would be
"First paperclip held by a PCB" :-)
Great stuff!+
Great, Is a "PCB coil solenoid" also feasible?
Hi, can we make it pulsatile? and how we do in your opinion?
Good job!
As the PCBs are really thin, what if you stack several of them? That should increase the flux, right?
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?
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
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?
Actuators for micro RC planes...excuse me what? How is that a thing i knew nothing about?=0
can we use this pcb coil to make guitar pickups?
Getting some great Project Farm vibes from this video. 😄
Clunky graphs needed :)
@@gth042 Need the "We're going to test that!"
Good job! 👍
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?
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
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?
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.
Maybe they also could be used as a proximity sensor.
they can :) someone already tried it ruclips.net/video/aJU7GkJ75jM/видео.html
A doubt with piezo driver?.
Cool video, thanks :)
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.
8:33 xD
You should also try at different frequencies, might see different results,😮😞
For the coil to coil test multiple frequencies were tested 🙂
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
You need more layers on the pcb
air core electromagnets are a thing. ;) Technically, I think they are still electromagnets.
This thing could actually be useful
Nice
Op bhai
Next time with nitrogen cooled metal core 😎
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
👌👌👌👌
try with thermal paste. 😂
i should have tried that yes :P
First 🥇