Basic Meter Theory

[Neil Morrison]

FWIW, a rule of thumb is that most meters drop about 0.3 volts. What is the 
FS mA of the new meter?

Example:

Old meter
mA 5
Ohms 60
New meter
mA 23
Ohms 150

So add 100 ohms in parallel.

Neil

----- Original Message ----- 
From: "DavidGriffin" davidgriffin at CISBEC.NET

Hi folks,

Can't remember my basic meter resistance theory.  Want to replace a meter 
that would normally read 5 ma with another meter of a different f.s.    Can 
someone please point me to a basic tutorial on the net in regards to this? 
I seem to remember some years ago calculating and/or measuring meter 
resistance and using formulae to calculate resistors, etc.  But the mind is 
rapidly deteriorating.

Thanks,

Dave
n2chi

-----------------------------------------------------------
Products bought, sold or traded here is the responsibility of the
parties involved.  This list and the City of Tempe are not responsible
for losses or misrepresentations of any kind.  Buyer beware!

-----------------------------------------------------------
This list is a public service of the City of Tempe, Arizona
-----------------------------------------------------------

Subscription control - http://www.tempe.gov/lists/control.asp?list=HEATH
To post - HEATH at LISTSERV.TEMPE.GOV
Archives - http://listserv.tempe.gov/archives/HEATH.html