Source for these beefy pancake coils?

[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]

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

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

[chris_leyson]

There is a Danish company whose name I forget but they make some very nice air cored inductors for speaker crossovers.

[MarkF]

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

The same thing happened on another post I viewed recently.

I'm starting to see this all over the forum.
Had several of my own posts where the thumbnail and photo do NOT match.
Even some corrupted thumbnails.
 

[Gyro]

It's being addressed in the Server Error Reports thread. I think gnif is looking into it.

[EEVblog]

It's being addressed in the Server Error Reports thread. I think gnif is looking into it.

Yes, gnif is looking into it.