| 摘要 |
A circuit for driving a stepping motor, in which excitation signals corresponding to an over maximum needle indicating angle toward a zero position at a timing of a car battery ON and excitation signals corresponding to twice that of one electric cycle for rotating a needle toward a zero position at a timing of turning ignition ON or OFF as supplied to drive coils, thereby eliminating sensing induced voltage and sensing coils to set a zero position and shorten extremely a time for returning a needle to a zero position with reducing vibrated motion and simplify the circuit structure and miniaturize unit size.
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