To attain optimality in consumption current and rotational stability of correction drive by carrying out drive according to a rotational load at the irrotational time.
A stepping motor control circuit 101 is equipped with a control circuit 106, which performs rotation control by using a backup drive pulse Py having an energy larger than that of a main drive pulse P1 when a stepping motor 102 is not rotated through rotational drive by the main drive pulse P1. While the stepping motor 102 is subjected to rotation control by using the backup pulse Py, the control circuit 106 performs the control to increase the energy of a braking drive pulse Pr contained in the backup drive pulse Py when a generated induced voltage exceeds a predetermined reference threshold voltage Vcomp2.
| JPS58103683 | ANALOG ELECTRONIC TIMEPIECE |
TAKAKURA AKIRA
MASAKI HIROYUKI
OGASAWARA KENJI
MANAKA SABURO
MOTOMURA CHIKASHI
HASEGAWA TAKANORI
Noriaki Uchino
Nobuyuki Kimura
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