> On May 8, 2019, at 3:56 PM, gregebert <gregeb...@hotmail.com> wrote: > > If this instrument is dual-voltage for 120/240VAC operation, there should not > be any issue with hot/neutral being swapped because both leads are hot in the > high-voltage case.
I have a Systron Donner frequency counter with an integral cord that's 120V only. Some idiot chopped the ground pin off. With it plugged in and turned OFF I can feel a tingle when I touch the case. I measure 54V RMS from the case to ground. I asked a friend who's an EE about it and he told me that the EMI filtering contains resistors from both hot and neutral to ground. In his words, "Put a damn grounded plug on it!" I installed a new grounded plug and the tingle is gone. Zero volts from case to ground. I'll post some pictures of it later. Terry Bowman, KA4HJH "The Mac Doctor" -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/3A5FC7C9-9135-4EEC-8C52-17F6B5CD34DB%40gmail.com. For more options, visit https://groups.google.com/d/optout.
