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Original poster: Thomas <tom-at-pwrcom-dot-com.au>
I had a win tonight.
I made a current transformer, RF rectifier and meter with an attenuator pot.
I passed the secondary earth through the CT turned the attenuator fully on
and powered up the coil.
Bingo! Half scale reading exactly, I then turned the attenuator all the way
off and got a full scale reading!!
Considering that the number of turns on the CT (7) and pot size (10k) were
only very roughly calculated this came as a nice surprise.
Now I can do some real tuning and air gap tweaking/redesign with quantitive