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Hi Patrick, Mr.Warwickshire, Finn Hammer, hen918, DerAlbi, Hazmatt_(The Underdog), Uspring and nzoomed
Thank you for your many contributions.
Perhaps one could build a standard Tesla coil, I think of a Leybold arrangement, which is readily available.
However, this Tesla coil should be operated with a "standardized" current source, preferably from a commercial supplier, with semiconductors e.g. Large IGBTs, instead of the Leybold spark gap which, after a few seconds of operation, greatly changes its electrical properties due to the extremely high temperature of the stainless steel discs.
This standard Tesla coil is then operated in such a way that the Tesla voltages generated do not exceed the limit value of the Tek high voltage head P6015A. At the same time an antenna is built whose signal is then assigned to these Tesla voltages, measured with the P6015A. Then you could then estimate the Tesla voltage, even without the probe, with this antenna by extrapolating the recorded curve between the P6015A signal and the antenna signal.
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How to measure REALLY the voltages of Tesla coils?