Electricity: motive power systems – Braking – Automatic and/or with time-delay means
Patent
1999-04-09
2000-12-05
Nappi, Robert E.
Electricity: motive power systems
Braking
Automatic and/or with time-delay means
318365, 318366, 318450, 318453, 318375, 318269, 318272, 318759, 360 741, 369234, 369235, 369268, H02P 300, H02P 504, H02P 704
Patent
active
061571539
ABSTRACT:
A motor driver has a braking control circuit. The braking control circuit shuts off the supply of an electric current to the coils included in the motor when a motor control signal shifts to a predetermined level and, after a predetermined length of time secured in accordance with an index signal, starts application of braking to the rotation of the motor by the use of a braking circuit. The index signal is obtained from the signal that indicates the rotational position of the motor. The motor control signal is fed from a control signal generating circuit to the braking control circuit.
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patent: 4862052 (1989-08-01), Unsworth et al.
patent: 5371635 (1994-12-01), Sakaguchi et al.
patent: 5587640 (1996-12-01), Ek et al.
patent: 5715157 (1998-02-01), Kuhn
patent: 5874817 (1999-02-01), Yashita et al.
Sakaguchi Takahiro
Uegami Tomoaki
Martin Edgardo San
Nappi Robert E.
Rohm & Co., Ltd.
Teac Corporation
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