Voltage protecting apparatus

Details Voltage protecting apparatus Voltage protecting apparatus

2011-08-30

2011-08-30

Masih, Karen (Department: 2837)

Electricity: motive power systems

Limitation of motor load, current, torque or force

C318S375000, C318S376000

Reexamination Certificate

active

08008881

ABSTRACT:
A voltage protecting apparatus is used for detecting voltage of a motor driver, and adjusting the voltage of the motor driver when at an over-voltage state. The motor driver includes a direct current (DC) power source and a power board. The voltage protecting apparatus includes a switch unit, a voltage transform unit, a controller, a voltage detector, and an over-voltage judger. When the controller outputs a high level signal, the switch unit is turned on, the voltage transform unit transforms the output voltage of the DC power source to a low voltage. The over-voltage judger receives the low voltage and compares the low voltage to a predetermined voltage. When the low voltage is greater than the predetermined voltage, the over-voltage judger outputs a control signal to the controller for signaling the controller to control the power board so as to adjust the voltage of the motor driver.

REFERENCES:
patent: 2004/0227479 (2004-11-01), Youm

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