Motor current detection circuit

Details Motor current detection circuit Motor current detection circuit

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.

REFERENCES:
patent: 4123792 (1978-10-01), Gephart et al.
patent: 4210948 (1980-07-01), Waltz
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.

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