We used to rely on that to select plate capacitors for high voltage RF amplifiers
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Can you tell us about that process?
We would estimate the breakdown voltage of variable capacitors by measuring the distance between adjacent plates. I keep thinking 10 thousand volts per inch, but I am not sure that is correct.
Wikipedia says
Although air is normally an excellent insulator, when stressed by a sufficiently high voltage (an electric field strength of about 3 x 106 V/m or 3 kV/mm), air can begin to break down,
So I guess it’s pretty close.
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