A
Andy Pichotta
Hi all,
I have a control board that runs a small DC motor (about 1 amp nominal) and
I sense
current using a .02 ohm resistor in series with armature. Works fine but I
was wondering
if it would be possible to eliminate the resistor and just use a trace on
the board for the IR
drop. Has anyone ever tried this? If I was to size a PCB trace to be .02
ohms how bad
could I expect the tolerance to be? Any comments welcome.
Thanks,
Andy
I have a control board that runs a small DC motor (about 1 amp nominal) and
I sense
current using a .02 ohm resistor in series with armature. Works fine but I
was wondering
if it would be possible to eliminate the resistor and just use a trace on
the board for the IR
drop. Has anyone ever tried this? If I was to size a PCB trace to be .02
ohms how bad
could I expect the tolerance to be? Any comments welcome.
Thanks,
Andy