Patent ID: 9741503
Date: 2017-08-22
CPC Classifications: H01H

Claim:
1. A control circuit of a switch device, comprising: a first switch unit; a second switch unit, wherein a first terminal of the first switch unit and a first terminal of the second switch unit are coupled to the switch device, and a second terminal of the first switch unit and a second terminal of the second switch unit are coupled to the ground; and a control unit, having an output pin coupled with a control terminal of the first switch unit and a control terminal of the second switch unit, outputting an enable signal to the control terminals of the first switch unit and the second switch unit from the output pin to simultaneously turn on the first switch unit and the second switch unit, and generating a control current on a common contact of the first switch unit and the second switch unit, wherein the control current is configured to control an on-state of the switch device, and the first switch unit is switched to an off-state after receiving the enable signal for a predetermined time.