Bidirectional motor stall protection circuit

Details Bidirectional motor stall protection circuit Bidirectional motor stall protection circuit

2005-04-14

2009-12-15

Ro, Bentsu (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S280000, C318S283000, C318S469000

Reexamination Certificate

active

07633252

ABSTRACT:
A stall protection circuit is provided for bidirectional motor operation that is controlled by a half bridge switch that has forward, reverse and off positions. A method of protecting a motor is also disclosed. A Hall effect current sensor may be provided in a stall current protection circuit that engages a latching circuit. The latching circuit is operative to interrupt current flowing to the motor by disabling MOSFETs on opposite sides of the motor. Alternatively, FET voltage from drain to source may be used to measure the current supplied to the motor that is used to engage the latching circuit.

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