I have a small motor, very small. I can recall running it by directly attaching 2 AA batts to it (in series - so 3v). I recently hooked it up to a hbridge with a 6v power supply (motor power), and as soon as I turn it on, the motor revs up, stays at what seems to be max RPM for about a sec, then goes down to no movement, only emitting a squealing noise of some sort. the motor doesn’t get hot, atleast, not for the 10 seconds or so that I left it on once it revs down and stops. Since the hbridge i’m using has a max output of 1A, could the behavior of the motor be explained by lack of ample current?
*if it helps, I tested further with the same setup but with a 9v instead of 6v, and achieved similar results, although the motor seemed to rev even higher at max RPM, and lasted slightly longer as well.