At 09:23 PM 21/04/2015, you wrote:

>Around the turn of the century, they made these things in 220V, 110V and
>32V (for farm users) but that's when they were sold as "medical" devices.
>Now it's my ESD tester.  The 50kV output is impressive, and any
>non-disposable electronics should stay well clear.  An inverter would
>almost certainly get fried as it's in the path of the return current.

Hi, David:-

What's stopping you from putting a 100nF/630V cap between input and
output of the inverter (if not shorting it directly, assuming the output
is floating). You could use a little SLA 12V battery and a cheap automotive
grade inverter.

Given the weirdness of this thing- magnetics, inductance and high-frequency
Tesla-style resonance-I'd try really hard to keep the supply velly similar
to the original unless you're really keen for a project.

Best regards,
--Spehro Pefhany

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