Interface unit having overcurrent and overvoltage protection device

摘要

An interface unit that interrupts overcurrent or overvoltage resulting from a ground voltage difference between electronic products interconnected through interface devices, so as to prevent damage to the products and risk of fire. The interface unit, which connects a first electronic product and a second electronic product to each other, includes a first interface device provided in the first electronic product and connected with the second electronic product, a second interface device provided in the second electronic product and connected with the first interface device through a VCC line and a ground line, and a ground overcurrent interrupter installed on the ground line, the ground overcurrent interrupter interrupting overcurrent flowing in the ground line.

主权项

1. An interface unit to connect a first electronic product and a second electronic product to each other, the interface unit comprising:
a first interface device being connectable with the first electronic product; a second interface device being connectable with the second electronic product and connected with the first interface device through a VCC line and a ground line; a ground overcurrent interrupter installed on the ground line between grounds of the first interface device and the second interface device, the ground overcurrent interrupter preventing overcurrent resulting from a ground voltage difference between the first interface device and the second interface device by interrupting overcurrent flowing in the ground line; and an overvoltage protector installed on the VCC line between VCCs of the first interface device and the second interface device, the overvoltage protector keeping a voltage applied to the VCC line at a predetermined reference level or less.