Stepping motor driving apparatus

Details Stepping motor driving apparatus Stepping motor driving apparatus

H - Electricity

02

P

318/20

H02P 8/00 (2006.01) G08C 19/20 (2006.01) H02P 8/18 (2006.01)

Patent

CA 2019377

A stepping motor driving apparatus includes a stepping motor and a pulse output circuit for outputting drive pulses for driving the stepping motor. A pulse generator generates further pulses which have a frequency higher than thatof the drive pulses. A gate circuit receives the drive pulses from the pulse output circuit and the further pulses from the pulse generator. The further pulses are output by the gate circuit during the high interval of each drive pulse. The stepping motor is thereby driven by pulses having a duty ratio that varies with the frequency of the further pulses.

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