Control circuit in hub

Abstract

A control circuit is mounted in a hub which includes first connector, second connector, third connector and power module. The first connector includes first data transmission line and first power line. The second connector includes second data transmission line and second power line. The power module includes first switch member electrically connected between the first power line and the second power line. The control circuit is electrically connected between the first data transmission line and the power module. When the third connector is electrically connected with AC source the control circuit opens the first switch member so that the first power line and the second power line are not electrically connected, and when the third connector is not electrically connected with AC source the control circuit closes the first switch member so that and the first power line and the second power line are electrically connected.

What is claimed is: 
     
         1 . A control circuit, mounted in a hub and the hub comprising a first connector, a second connector, a third connector and a power module, the first connector being a USB Type-C interface and comprising a first data transmission line and a first power line, the second connector comprising a second data transmission line and a second power line, the power module electrically connected with the first connector, the second connector and the third connector, and the power module comprising a first switch member which is electrically connected between the first power line of the first connector and the second power line of the second connector, wherein the control circuit is electrically connected between the first data transmission line of the first connector and the power module, when the third connector is electrically connected with a AC source the control circuit opens the first switch member so that the first power line and the second power line are not electrically connected, and when the third connector is not electrically connected with the AC source the control circuit closes the first switch member so that and the first power line and the second power line are electrically connected.