"Cecil Moore" wrote in message
...
John Smith wrote:
http://blake.prohosting.com/mailguy2/swr1.jpg
http://blake.prohosting.com/mailguy2/swr2.jpg

This should prove as "proof of concept" that an "indicator" using such a
toroid should darn well work! ... at the very least--in the fashion I
am
attempting...

If you will notice, your earlier versions did not sample
the voltage. These designs sample the voltage through C1
and C2. The current is sampled by T1. The voltages are
phasor-added to the current to obtain signals proportional
to forward power and reflected power. Those voltage sampling
caps are what were missing from your earlier designs.
--
73, Cecil, http://www.qsl.net/w5dxp

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CQ Amateur Radio magazine October 1997 "N7VE's One LED SWR Indicator".

73 Roger ZR3RC