Title:
BIDIRECTIONAL ROTATION STEPPING MOTOR, ELECTRONIC CLOCK HAVING THE SAME, AND DRIVING METHOD FOR THE BIDIRECTIONAL ROTATING STEP MOTOR
Document Type and Number:
Japanese Patent JP2005151783
Kind Code:
A
Abstract:
To provide a stepping motor capable of simplifying a rotational control method for a rotor portion, and a control circuit, and realizing size reduction and high-speed operation of the rotor portion.
This stepping motor 1 is capable of normal and reverse rotations which is constituted of the rotor portion 2 consisting of at least a permanent magnet, a stator portion 3, and a rotor portion rotational control means 4 which controls the rotation of the rotor portion 2. At least two statically stable positions P of the rotor portion 2 are provided in between the rotor portion 2 and the stator portion 3, and the rotor is structured so as to be rotated by 360 degrees with one-step operation pointer.
Inventors:
SATO KOICHI
Application Number:
JP2003390315A
Publication Date:
June 09, 2005
Filing Date:
November 20, 2003
Export Citation:
Assignee:
CITIZEN WATCH CO LTD
International Classes:
G04C3/14; H02K37/16; H02P8/02; (IPC1-7): H02K37/16; G04C3/14; H02P8/02
Attorney, Agent or Firm:
Takehiko Saito
Yasuyuki Hata
Yasuyuki Hata