Title:
【発明の名称】モータ駆動回路及びワイヤボンディング装置
Document Type and Number:
Japanese Patent JP2755667
Kind Code:
B2
Abstract:
A motor-driving circuit (11) is used for driving a motor (12) which is of a type including a rotor whose rotating shaft has a permanent magnet used for generating magnetic fluxes, and an armature having three-phase windings wound around an iron core to form Y-connection windings. The motor-driving circuit (11) includes a circuit (5) for short-circuiting two of the three leads extending from the Y-connection windings, a rotational position detector for detecting a rotational position of the motor, and a control circuit (17) for causing an exciting current to flow between the short-circuited leads and the remaining lead, in such a manner that the rotational position detected by the rotational position-detecting means is moved to a designated rotational position which is external input and is within a narrow angular range.
Inventors:
KASHIMA NORYASU
SUEMATSU MUTSUMI
OOTANI KAZUMI
ATSUMI KOICHIRO
SUEMATSU MUTSUMI
OOTANI KAZUMI
ATSUMI KOICHIRO
Application Number:
JP7452189A
Publication Date:
May 20, 1998
Filing Date:
March 27, 1989
Export Citation:
Assignee:
TOSHIBA KK
International Classes:
H01L21/60; H01L21/00; H02P6/06; H02P6/08; H02P6/17; H02P6/24; H02P6/28; H02P8/22; H02P23/00; (IPC1-7): H02P6/06; H01L21/60; H02P7/36
Domestic Patent References:
| JP5914387A |
Attorney, Agent or Firm:
Takehiko Suzue (3 outside)