ORIGINAL MESSAGE: (may be snipped)
On Sun, 06 Oct 2013 00:44:46 +0000, Manfred wrote:
>The
>same applies to Bill's battery/inverter solution - it's safe to power
>the amp from teh battery/inverter, but NOT the scope!
REPLY:
Once again, we disagree.
Think about it: With a battery powered scope and using the dual probe ADD +
INVERT mode, the only connection between the HV and the scope chassis is
through the two high impedance probes. Remember, the scope chassis isn't
connected to anything.
I just went out to the shack and measured my Tek 10x probes. They are 9 megs
from tip to center conductor of the BNC. As I recall the resistor is
paralleled by a few pF. Wouldn't hurt a fly at 60 Hz.
Or you could get a 40 MHz Fluke ScopeMeter for several thousand dollars.
That works too. :-)
73, Bill W6WRT
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