Miscellaneous active electrical nonlinear devices – circuits – and – Specific signal discriminating without subsequent control – By amplitude
Patent
1996-02-14
1997-01-07
Tran, Toan
Miscellaneous active electrical nonlinear devices, circuits, and
Specific signal discriminating without subsequent control
By amplitude
327 77, 327 89, 327205, H03K 5153, H03K 3037
Patent
active
055921124
ABSTRACT:
A motor current detection circuit is formed of a current detector for detecting an overloaded state of a motor by comparing a motor current value, which represents current flowing through the motor, with a predetermined reference value, and a hysteresis generating circuit for generating, in the current detector, a hysteresis characteristic corresponding to an integrated value with respect to time of an increment amount by which the motor current value exceeds the reference value. Chattering in output of the current detector is reduced so that an overloaded state of the motor can be detected quickly.
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patent: 4354235 (1982-10-01), Blakeslee
patent: 4528486 (1985-07-01), Flaig et al.
patent: 4558310 (1985-12-01), McAllise
patent: 4746813 (1988-05-01), Disser
patent: 5245526 (1993-09-01), Balakrishnan et al.
patent: 5424666 (1995-06-01), Palara et al.
Kabushiki Kaisha Tokai-Rika-Denki-Seisakusho
Tran Toan
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