Title:
DC MOTOR DRIVE CIRCUIT AND TAPE PRINTER COMPRISING THE SAME CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2003/007466
Kind Code:
A1
Abstract:
A DC motor drive circuit for stabilizing the rotation of the DC motor just after power supply and for preventing its reverse rotation just after a stop of power supply. As the circuits for supplying a power source voltage to a DC motor (6), an unstable voltage supply circuit (103) is disposed as well as a stable voltage supply circuit (104) that shares a transistor (TR1) with this circuit. The stable voltage supply circuit (104) is used at the beginning of the start−up of the DC motor (6), and the unstable voltage supply circuit (103) is switched on when the DC motor (6) reaches a constant speed.
Inventors:
UNOTORO HIROTSUGU (JP)
HOKAZONO TAKAMINE (JP)
SHIBATA YASUHIRO (JP)
SUGIURA YOSHIO (JP)
TANJIMA NAOKI (JP)
MUTO NARUHITO (JP)
HOKAZONO TAKAMINE (JP)
SHIBATA YASUHIRO (JP)
SUGIURA YOSHIO (JP)
TANJIMA NAOKI (JP)
MUTO NARUHITO (JP)
Application Number:
PCT/JP2002/007119
Publication Date:
January 23, 2003
Filing Date:
July 12, 2002
Export Citation:
Assignee:
BROTHER IND LTD (JP)
UNOTORO HIROTSUGU (JP)
HOKAZONO TAKAMINE (JP)
SHIBATA YASUHIRO (JP)
SUGIURA YOSHIO (JP)
TANJIMA NAOKI (JP)
MUTO NARUHITO (JP)
UNOTORO HIROTSUGU (JP)
HOKAZONO TAKAMINE (JP)
SHIBATA YASUHIRO (JP)
SUGIURA YOSHIO (JP)
TANJIMA NAOKI (JP)
MUTO NARUHITO (JP)
International Classes:
H02P1/18; H02P3/08; (IPC1-7): H02P7/06
Foreign References:
JPS5334284B2 | 1978-09-20 | |||
JPH03113762A | 1991-05-15 | |||
JPS4417339B1 | ||||
JPH05146193A | 1993-06-11 | |||
JPS63190586A | 1988-08-08 | |||
EP0943447A1 | 1999-09-22 |
Attorney, Agent or Firm:
Koizumi, Shin (37-4 Yushima 3-chom, Bunkyo-ku Tokyo, JP)
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