Electricity: motive power systems – Plural – diverse or diversely controlled electric motors – Running-speed control
Reexamination Certificate
2005-06-01
2008-09-30
McCloud, Renata (Department: 2837)
Electricity: motive power systems
Plural, diverse or diversely controlled electric motors
Running-speed control
C318S800000, C318S782000, C318S400210
Reexamination Certificate
active
07429836
ABSTRACT:
A motor driver circuit includes a diving circuit for driving at least one motor, a plurality of DC/DC converters for respectively generating different voltages, a detection circuit to detect an output failure in the plurality of DC/DC converters, and a stopping circuit for stopping a specific DC/DC converter if failure is detected in an output of the specific DC/DC converter. In addition, a signal output circuit outputs a first signal if the specific DC/DC converter of the plurality of DC/DC converters is stopped by the stopping circuit, recovery means recovers the specific DC/DC converter when a second signal is inputted, and a reset circuit stops the rest of the plurality of DC/DC converters, if the stopping circuit stops any one of the plurality of DC/DC converters other than the specific DC/DC converter.
REFERENCES:
patent: 6456508 (2002-09-01), Namai et al.
patent: 2005/0024000 (2005-02-01), Aizawa
patent: 9-37347 (1997-02-01), None
patent: 11-332001 (1999-11-01), None
patent: 2005-65486 (2005-03-01), None
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