Yea, the difference between uH (Micro-henries) & mH (mil-henries) is what I've
always understood since my earliest training. But the fact that I have been
unable to fine mH chokes & only found uH chokes made me wonder if the
measurement system of inductors had changed!! (sort of like when capacitor
measurements changed from uuF to pF)
I was doing this search late last night. Today, a little more fresh, I'll go
back to work & look at the Newark & Allied catalogs again! Perhaps I'll see
something I missed.
------ Original Message ------
Received: Wed, 22 Dec 2004 09:35:50 PM CST
From: Joe Montierth <[EMAIL PROTECTED]>
>
> --- JOHN MACKEY <[EMAIL PROTECTED]> wrote:
> > I need to build a filter and it requires I have a
> > few chokes of 2.2 mH value.
> > So I look in the Newark & Allied catalogs and all
> > the chokes I am seeing are
> > labeled "�H" (a "u" with a tail on the left)
> > rather than "mH"
> >
> > Was I asleep for a long period of time & they
> > changed how inductors/chokes are
> > labeled or am I missing something else?
>
> The m is for milli, the u (with the tail) is for
> micro. They are both valid, RF frequencies usually use
> "microhenries"(u) and audio range will use
> "millihenries" (m). If you order the wrong one you'll
> only be off by a factor of 1000!
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