This circuit provides an easy way to meter current if your meter only has voltage capability.
“The circuit shown on this page is a reasonably Low Cost, Hi-Tech ammeter that can be used with DCC systems. The circuit’s meter output is always has the same polarity regardless of the input polarity. This allows a low cost DC voltmeter to be used to monitor a DCC current.”
DCC Ammeter
Permalink
Sweet.
Permalink
I like this device. I am going to build 4 of them for my model rr club.
What I need now is a simple LED display coupled to it so I can see the output
from across the room.
Permalink
Newer version of DCC ammeter page available. March 2007