Switching current regulator for motor control

DETAILED DESCRIPTION The foregoing objects are achieved in the present invention wherein the induced E.
M.
F.
from a collapsing field is absorbed by switching the polarity of the voltage applied to a winding of a D.
C.
motor.
The width of the pulse through the winding is determined by the electrical characteristics of the winding itself.
Specifically, the current through the winding is monitored and the applied voltage is terminated and then reversed when a predetermined value of current is reached.
The current sensing circuitry compensates for the reverse polarity of the supply voltage in step with the switching.
The polarity and magnitude of the resultant winding current are then functions of the duty cycle of the voltage switching waveform.