MOTOR DRIVING DEVICE AND ANALOG ELECTRONIC CHRONOMETER

PROBLEM TO BE SOLVED: To enable a motor, even if the state of driving the motor is in a prescribed state in which wrong actions are apt to occur, to be driven with an appropriate driving pulse.SOLUTION: A motor driving device comprises a secondary battery 2 that supplies driving power for at least motors 6 and 7, state detecting means that detects whether or not the state in which the motors 6 and 7 are driven is a prescribed state, a battery voltage detector 10 that detects the voltage of the secondary battery 2 at intervals matched with the result of detection by the state detecting means, and control means that drives the motors 6 and 7 with a driving pulse having energy matched with the result of detection by the battery voltage detector 10, out of multiple kinds of driving pulses differing from one another in energy. The battery voltage detector 10, when it is detected by the state detecting means that the state in which the motors 6 and 7 are driven is the prescribed state, detects the voltage of the secondary battery 2 at shorter intervals than when a state different from the prescribed state has been detected.