[R-390] Re: R390 panel meter resistance

Thu, 8 May 2003 09:36:51 -0400

Why not use a DMM (never a VOM!) and simply measure the internal resistance
directly.  Works like champ using a Fluke 8020A.

Vy 73, AI2Q, Alex in Kennebunk, Maine
http://users.adelphia.net/~alexmm/ai2q.htm

 .-.-.

-----Original Message-----
From: [email protected] [mailto:[email protected]]On
Behalf Of Dave and Sharon Maples
Sent: Wednesday, May 07, 2003 9:16 PM
To: W. Li; [email protected]
Subject: RE: [R-390] Re: R390 panel meter resistance

All: Very good point, but I'd add one other piece to this.  At the point
that you set the two meters in series for a full-scale reading on the R-390
meter and note the current on the other meter, instead of disconnecting and
finding a 10-turn pot, why not just read the voltage across the R-390 meter
at that point, and then apply Ohm's law to figure out the meter
resistance..........