Sourcing cores for saturable reactors

Author Topic: Sourcing cores for saturable reactors (Read 4664 times)

bte	Sourcing cores for saturable reactors « on: 2025-11-21, 16:46:56 »
Sr. Member Posts: 386	I'm looking into a saturable reactor as a switch for some research I'm conducting at the moment. I'm looking for cores that have as square a BH curve as possible. Does anyone have any resources/documentation on tape wound cores or testing methods for determining the curve?

bte	Re: Sourcing cores for saturable reactors « Reply #1 on: 2025-11-21, 16:54:12 »
Sr. Member Posts: 386	Circuit I'm looking at Sourcing cores for saturable reactors Screenshot_20251121_115339_Chrome.jpg (122.83 kB, 1080x925 - viewed 468 times.)

Verpies

Re: Sourcing cores for saturable reactors « Reply #2 on: 2025-11-21, 17:43:16 »

Group: Administrator
Hero Member

Posts: 4856

Quote from: bte on 2025-11-21, 16:46:56

I'm looking into a saturable reactor as a switch for some research I'm conducting at the moment. I'm looking for cores that have as square a BH curve as possible. Does anyone have any resources/documentation on tape wound cores or testing methods for determining the curve?

Metglass and Nanoperm come to mind here.
I think Bearden used the ones made by Honeywell.

The BH curve measuring process is described on this forum^*.
A modern digital oscilloscope with an integrating Math trace helps a lot.

* Don't ask me to find it for you.

bte	Re: Sourcing cores for saturable reactors « Reply #3 on: 2025-11-21, 17:50:50 »
Sr. Member Posts: 386	Quote from: Verpies on 2025-11-21, 17:43:16 Metglass and Nanoperm come to mind here. I think Bearden used the ones made by Honeywell. The BH curve measuring process is described on this forum^. A modern digital oscilloscope with an integrating Math trace helps a lot. Don't ask me to find it for you. Nice I'll do some sleuthing, thanks.