Joe,

Just yesterday I was looking at this issue.
Here are just some of the the sites I visited to learn more.

http://www.cchem.berkeley.edu/College/Facilities/nmr/apps/probetune/probetun
e.html
http://www.minicircuits.com/appnote/coup7-2.htm

I need a directional coupler to get power into a power conversion chip and
then send the voltage to the A/D on the PIC.
Unfortunately, I "popped" the chip after a direct connection....which was
wrong.
I want to make one.........and this may actually be a diode or some sort of
close proximity arrangement.
Possibly someone else has a better description.

David



----- Original Message -----
From: Joe Hamilton <joeh100@CROSSWINDS.NET>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Sunday, March 05, 2000 7:39 PM
Subject: [OT] Directional Coupling


> Can anyone explain the theory behind directional coupling or suggest a
> web-site?
>
> Thanks,
>
> Joe
>