On Tue, 06 Mar 2007 19:06:50 GMT, Robert Baer
Gave us:

MassiveProng wrote:
On Mon, 05 Mar 2007 20:27:02 GMT, ehsjr Gave
us:


I don't know what your meter does. I assume it's
like any other. If so, it uses a shunt and develops
a voltage across the shunt so it is the same principle
as what I'm taking about, but not the same values.
AFAIK, they don't use a megohm neighborhood shunt
for low current - but then, I don't have any
meters with an nA scale.



They don't. It is a precision, low value shunt resistor, and they
read voltage across it to determine the current through it.
And that is *exactly* what i proposed with the "trick"; place the DVM
on the 200mVFS scale, add a shunt 1.11Meg resistor (that means in
parallel; use the dictionary) across the meter and the sensitivity of
this network is 200nAFS.
Simple ohms law...


Simple Ohms's law also states that when you series that mess with
your circuit under test, all the voltage will drop on your precious
resistor/meter set-up , and there won't be any in the circuit you wish
to examine.

In other words, dumbass, the reason that shunts are of low ohmic
value is so they do not modify the circuit you are attempting to
examine.

Your stupid **** certainly would do just that. Your lack of
understanding that a current meter needs to be of low resistance is
quite a tell as well. You must be a digital guy, and seemingly not a
very good one to miss this basic.