Quote:
Originally Posted by Xringer
I once had a 0 to 5 ma DC amp meter and hacked it to read out higher amperage,
by adding a few feet of 14g wire in parallel with the terminals.
When a few amps of current was in the wire, a small voltage drop(loss)
develops across the 14g loop, making the meter defect.
I shortened the wire until I got 25A to move the meter to about mid-scale.
I quit right there and called it a 50 amp meter..  |
That's pretty much what I had in mind. How would I calculate the resistance needed in the parallel circuit, depending on the scale I'd need?