In article .com,
" writes:
John Rumm wrote:
wrote:
I take it this voltage presence is wrong? Anyone any pointer as to
what could be causing this?
A digital multimeter I take it?
No - it's a 'mini' analogue needle multimeter - a few years old now
though.
If it's something like 20kohms/V (50ľA movement), then on
a 300V range, it's got nearly the same input impedance
as many digitial multimeters. You will probably find
the voltage reading is different when set to different
ranges (lower on a lower voltage range, as the meter's
input impedance drops). This would be an indication it's
just leakage through a high impedance, most likely caused
by capacitive coupling in the cables.
--
Andrew Gabriel