| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor driver high current protector. SOLUTION: This motor driver (8) high current protector includes a voltage source, a current sensor (10), a comparator (12), a switch (14), a delay circuit (16), and an inhibitor (18). The current sensor (10) is configured to sense (26) current passing through the motor driver (8) and output (28) a voltage responsive to the sensed current. The comparator (12) has an output and is configured to generate (40) a low voltage at its output while the output of the current sensor (10) exceeds a first reference voltage. The switch (14) has an input, an output, and a base. The base is activated by a low voltage at the output of the comparator (12) to close (42) the switch (12). Closing (42) the switch (14) provides electrical connection between the input and the output of the switch (14). The input of the switch (14) is connected to the voltage source. The delay circuit (16) is connected to the output of a switch (14) and is configured to attenuate the voltage at the output of the switch (14) while the switch (14) is open.
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