From: Richard Clark
Subject: Re: help interpreting toroid schematic
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NNTP-Posting-Date: Tue, 10 Sep 2002 21:58:49 GMT
Organization: AT&T Broadband
Date: Tue, 10 Sep 2002 21:58:49 GMT
On Tue, 10 Sep 2002 17:21:54 -0400, "Bill Johnson"
>I am attempting to build a project that uses a quadfilar wound FT50-43
>toroid. I am having trouble interpreting the schematic and I'm not sure if
>the actual wiring of the toroid is correct. Can someone confirm whether or
>not my wiring scheme is correct? The toroid schematic and my wiring
>interpretation are at http://www.mindspring.com/~elecman/helpschematic.jpg
>Thanks in advance for responses.
Quadfilar means that four (4) wires are wound together, in parallel.
Your drawing needs color for each winding to clearly answer your
question, also, it needs phase dots on the schematic to correlate
correct connections. 1 & 3 appear to be backwards, as do 5 & 7; but
without the individual windings visible, or phase information, it is
difficult to say.
What you have in your mind, and what you have posted may well work,
but without these details, I for one, could not respond in the
affirmative. Reasons for my saying 1 & 3 appear to be backwards is
due to all windings starting at the same end (presumably 1,4,5,8)
would not find 1 & 3 in proximity with 2 & 4 connected unless there is
a phase inversion not shown. [Same goes for 5,7 and 6,8.]
Richard Clark, KB7QHC