I saw some chokes that had three wires bound togetehr at the ends (parallel) and wound five times around a toroidal core. Why would they do that? Doesn't that reduce the inductance? Why not just use one wire?

On Sun, 16 Jul 2006 08:55:50 GMT, ¦¦¦SHAD0W¦¦¦
wrote:

I saw some chokes that had three wires bound together at the ends
(parallel) and wound five times around a toroidal core. Why would
they do that?

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To reduce skin effect and/or fit a higher current winding in the
winding window than could be done with a single wire.
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Doesn't that reduce the inductance?

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No
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Why not just use one wire?

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See above


--
John Fields
Professional Circuit Designer

probably a manufacturing restriction, winding machine can't handle the heavier wire, etc.

why do you care?? what's important is the coils' performance

DR EE
"¦¦¦SHAD0W¦¦¦" wrote in message news:qanug.2760$hK6.2535@trndny07...
I saw some chokes that had three wires bound togetehr at the ends (parallel) and wound five times around a toroidal core. Why would they do that? Doesn't that reduce the inductance? Why not just use one wire?