Rotor control circuit for small stepping motor - has control stage with triangular wave generator of given pulse duration

摘要

A rotor control circuit is for a small stepping motor, used as a switch. The stator coil is fed with a series of pulses of alternating polarity from a control stage. The control stage is fed with rectangular pulses. The control stage has a triangular wave generator, where the bipolar triangular pulses are symmetrical. The pulse duration is approx. 1 second and the duration of the rising edge is equal to or greater than the falling edge of the pulse. The duration of the rising edge is equal to or greater than 0.5 msec.