On Sat, 08 Jul 2006 09:09:02 -0700, Richard Clark
wrote:

A 10 Meg Ohm meter would take 10
ms to discharge in comparison to 0.1 µs to recharge.

This was rather a hip-shot guesstimate where I put the cap on the
wrong side of the isolation line's resistance. Anyway, there's still
a significant charge/discharge ratio that isolates the meter.

On the other hand, having called it a clamping circuit was a stretch
too. It is in fact a rather sloppy design in that regard (it is self
discharging) but this is not to say it lacks its intended utility.

73's
Richard Clark, KB7QHC