Electronics > Projects, Designs, and Technical Stuff

Source for these beefy pancake coils?

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ledtester:
Looking for something along the lines of these:



I know you can find similar coils in modern hard drives, but they're not as "beefy".

Are they still manufactured? Is there another source for them besides old floppy and hard drives?

daqq:
They are mostly custom wound coils, to the best of my knowledge they are not standard parts. You can probably source them without gutting old devices, but either it's NOS or you can go custom.

See: https://pvelektronic.com/samonosne-a-tvarove-civky/9/2/detail/

Also, depending on the application, you could abuse planar charging coils: https://uk.farnell.com/c/passive-components/inductors/charging-coils

TimFox:
Interesting problem:  clicking on your photo brings up a different image.

mikerj:

--- Quote from: TimFox on July 06, 2020, 02:51:20 pm ---Interesting problem:  clicking on your photo brings up a different image.

--- End quote ---

The same thing happened on another post I viewed recently.

duak:
I've seen coils like this in loudspeaker crossover networks.  I Googled "speaker crossover coils inductors" and got a few hits.

This one looks interesting: https://www.erseaudio.com/Products/Coils

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