Guru
Joined: 09/08/2007
Location: AustraliaPosts: 4406
| Posted: 10:48am 16 Mar 2017 |
It will be a split C core with a pretty big air gap. This is going to behave very differently to an ungapped ferrite core.
A ferrite core will very quickly saturate at only a very few amps, so its only going to do anything during the very short time interval the mosfets are switching.
This gapped iron choke is going to be a full time inductor,its going to be there all the time with the full inductance.
From memory my Inspire choke had 42 turns on each side (84 turns total) and 3.4mH.
If I rewound that with 8 turns total, the inductance would fall to 32uH.
The saturation current of the original was somewhere around 45 amps, that will have now increased to maybe 460 amps.
So that 32uH is not going away.
This is going to be very interesting. Just make sure you have the two windings phased correctly so they are in series.
Cheers, Tony.