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Thread: Coil Winder
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08-18-2014, 08:19 PM #11
- Join Date
- Oct 2013
- Location
- Saskatoon, SK, Canada
- Posts
- 5
That's a brilliant idea. 0.45A is a problem, but maybe things could be re-worked to not need as much current.
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08-18-2014, 10:07 PM #12
Well, you can always use a 16 layer PCB, but then it starts becoming inaccessible! Realistically, two 4 layers stacked on top of eachother to make the 8 would be good. Or likewise you can stack two 8's to get twice the turns and half your current.
Worst possible case is that you run a buck converter from the 5v to get 1.5v or some voltage ideally matched to produce 0.45A. Then you can run your current amplifier from that 1.5v.
This would ensure a solid regulated Vcc for the coil drive, and it may even help with your ground loop problem on the speaker wire! (also, arent ground loops fun?!).
There is a nice little chip I use for work:
http://www.digikey.ca/product-detail...3-1-ND/4147125
Inexpensive, simple to use, no real problems with it. (just follow their example). It will add more to your board space and BOM, but at least it is a possibility that accounting can have the *option* to shoot down!
There are also tons of chips like this, so dont be shy to shop around!
- UD
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08-18-2014, 10:29 PM #13
- Join Date
- Apr 2014
- Posts
- 88
I just finished watching the assembly video for the Peachy again and from the looks of it, using a PCB coil instead of the wire wrap would make assembly easier and would be more conducive to the "snap fit" assembly.
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09-18-2014, 02:19 PM #14
How goes the progress on the PCB coils?
I just stumbled upon this:
http://www.digikey.ca/product-detail...2265-ND/703454
Digi-Key Part Number: 240-2265-ND
It`s a 20mm square ferrite plate. Id imagine if you stuck it to the back of one of the coils, it might better concentrate the magnetic flux and increase the coil`s influence on the magnet. Bringing the magnet closer to the coil would further help coupling.
- UD
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10-02-2014, 01:24 AM #15
- Join Date
- Sep 2013
- Posts
- 308
Last edited by rylangrayston; 10-10-2014 at 09:16 PM.
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10-10-2014, 03:06 PM #16
- Join Date
- Sep 2013
- Posts
- 6
Hey guys,
I just wanted to let you know that we posted an update about Winder on KS and IGG today. You can check it out here.
New member with print issue
06-11-2024, 08:57 AM in Tips, Tricks and Tech Help