5 Feb
2015
5 Feb
'15
10:24 a.m.
Where do you guys find these 11/45's? I'd love to get one someday. Is
there an PDP-11 outlet mall I missed somewhere?
Marc
On Thu, Feb 5, 2015 at 9:46 AM, Jon Elson <elson at pico-systems.com> wrote:
On 02/05/2015 10:27 AM, Noel Chiappa wrote:
rectifier
is
between the AC input and the rest of the circuitry, therefore there is no
part
of the EUT that is at neutral potential, and if you hook up a grounded
scope, you
will have fireworks. Floating a scope above ground should be reserved for
the
most special cases where you are testing line-powered gear that MUST not
run on an isolation transformer, for some reason.
Jon
From:
tony duell
A plain Variac does not provide isolation from
the mains so you are
actually now working on mains-connected circuitry (read :
dangerous and
you can't clip a 'scope on it).
I'm clearly a little slow this morning: why can't you use a 'scope on it?
Because the equipment under test is connected to the mains. A bridge