Electricity: motive power systems – Braking
Reexamination Certificate
2007-05-08
2007-05-08
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Braking
C318S432000, C318S434000, C318S273000, C318S703000, C318S363000, C318S373000, C318S376000
Reexamination Certificate
active
10789223
ABSTRACT:
A motor drive circuit includes a first transistor. The collector of a second transistor is connected to the emitter of the first transistor in series. A motor is connected to a connection point between the first and second transistors. A first brake control circuit turns off the first transistor and turns on the second transistor in accordance with a brake operation instruction signal. A second brake control circuit forces the first transistor to be turned OFF in accordance with the brake operation instruction signal independently from the first brake control circuit.
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Oohara Tomomitsu
Usui Kaoru
Anderson Kill & Olick
Donovan Lincoln
Lieberstein Eugene
Mitsumi Electric Co. Ltd.
Smith Tyrone
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