Secondary Voltage Measurement with CRO

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "tesla by way of Terry Fritz <twftesla-at-uswest-dot-net>" <tesla-at-paradise-dot-net.nz>

Team
Read Terry F's paper on sensing and recording secondary voltage waveforms.

Tried same with less formal antenna ie scope probe and small piece of foil
to capacitively couple at a distance of some 5 metres. (Frequency response
issues accepted)

Found very strong RF component at 3.5Mhz. Was supprised to see this as Fo is
95kHz. This 95kHz component was hard to find.

Reason  for experiment was to estimate  pri/sec coupling by inspection of
notch period.
Have others found same result seeing only components well above Fo ??

Tnx to all and to Terry for his work

Rgds
Ted L
NZ