Guru
Joined: 13/10/2014
Location: AustraliaPosts: 1860
| Posted: 04:44am 21 May 2025 |
In case anyone is interested.
I finally had some MS226060-2 arrive from an AliExpress site that has the slowest delivery time I've seen, Site keeps saying my order is canceled due to shipping delays, then they issues a new consignment tracking number, no tracking info and then after a month or so, it suddenly appears at my doorstep via DHL.
Toroids 57.1x26.4x15.2mm
It's the last on on the list, click "View More" to expand the list (57.1x26.4x15.2mm)
These are the original meatier (smaller hole) Blue Toroids that I use, they will just fit 5 turns through a six Stack of Toroids for around 23uH, 4 turns will give 16uH.
You need 12 of these Toroid Rings to make two x 6 stack chokes at either 16uH or 23uH, the price shown is for a 3 pack.
And just to make me want to bash my head against the sharp edge of a desk
Replacing a temporary 40uH Toroid choke in one side of the "Test Inverter" with one of these 23uH chokes, which matches the existing 23uH choke in the other side, has completely eliminated the Buzz I could induce into the Toroid by fast stepping the DC input up or down. It still makes a slight Buzz as you fast step the Voltage up, but as soon AC regulation is reached, the buzz stops and the Toroid remains silent (ear against the Toroid)
Made a slight miscalculation in the Inductance, 4 turns 16uH, 5 turns 23uH.
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Edited 2025-05-22 11:43 by KeepIS