[sdiy] Phasing circuit

[patchell]

    Now you are asking a really hard question...well, not too hard...of the
11 notebooks that have EN in them, fortunately, I have only skimmed through
3 of them....so hold on, while I look through the most probable
notebook....

Found it...that didn't take too long...did it?

    EN #83 page 15 shows a circuit using two six stage phase shifters to
give the 90 degree shift.

    They also show the pole locations for the stages:

    Side A:
        5.41Hz
        41.1Hz
    167Hz
    671Hz
    2694Hz
    11977Hz

    Side B:
    18.8Hz
    83.5Hz
    355Hz
    1344Hz
    5472Hz
    41552Hz

    Hopefully I didn't get any typos in there.

    The article for the frequency shifter starts on page 5 of EN #83
pretty cool article.

Magnus Danielson wrote:

> From: patchell <patchell at silcom.com>
> Subject: Re: [sdiy] Phasing circuit
> Date: Thu, 24 Apr 2003 12:12:07 -0700
>
> >     There are circuits in Electronotes (just ran accross them last
> > night), and I thought our own JH had a circuit on his website (or, at
> > least, at one time)....
>
> He does, at least if he did not remove it fairly recently.
>
> What references do you find in the Electronotes?
>
> Cheers,
> Magnus

--
 -Jim
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