roddyalan
Junior Member level 1
Perplexing Q with Motor
Hi guys,
I am testing out a motor, for which I don't have any specs
From eqn, V = VBackemf + I R
V = 12V
when stationary, R = 5.6 ohms
When starting, Istart = V / R, so 2.14, and this should be the max that current should ever go.
I measured with an induction ammeter and it showed 12A. When it was driven against a heavy load, but still rotating, it showed 40A.
Can someone tell me where I am going wrong.
Thanks
AR
Hi guys,
I am testing out a motor, for which I don't have any specs
From eqn, V = VBackemf + I R
V = 12V
when stationary, R = 5.6 ohms
When starting, Istart = V / R, so 2.14, and this should be the max that current should ever go.
I measured with an induction ammeter and it showed 12A. When it was driven against a heavy load, but still rotating, it showed 40A.
Can someone tell me where I am going wrong.
Thanks
AR