Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1860
| Posted: 12:38am 13 Jan 2023 |
As noted above, I missed an earlier post by Poida with some valuable info.
Choke Current and Inductance:
Cores are E70 N87 Ferrite with 6 turns:
I used a wider gap to see how much difference the gap makes to both values.
GAP: 0 2.8mm
Inductance: 160uH 10.2uH
Saturation: 20A 220A
As I posted yesterday, the Choke at 10.2uh still bought the idle current down from 1.5A to 320ma [16 watts] but obviously more noise on the choke output.
Simple Saturation Tester 50mv = 200A:
No core Gap:
2.8mm core gap:
1.3mm core gap:
Interestingly halving the gap to 1.3mm made the inductance go up slightly from 10.2uH to 13uH and the saturation drop from 220A to 160A, 80A less.
Edited 2023-01-13 11:26 by KeepIS