variation of motor voltage in different HE positions

an interesting outcome of checking the Vs pin on the IR2175 for negative transients is that for differnet hall effect postions, the voltage shape for each PWM pulse is different.

When the motor is moving in a clockwise direction, in hall effect positions (afm_060105_B.HE in watch window) 4 and 5 the shape is:



I just blew up a FET trying to stop the motor to check. better try with the switches.

1 and 6 the shape is:



for 3 and 2 the shape is:



remembering that the order of the hall effects is:

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