Patent ID: 8654489
Filing Date: 2014-02-18
Classification: H02H

Abstract:
1. An apparatus, comprising: an integrated circuit, comprising an input circuit; a first diode including a first anode and a first cathode, with the first cathode coupled to a first voltage, the first anode coupled to the input circuit at a node via a first mechanical switch; a second diode including a second anode and a second cathode, with the second cathode coupled to the node via a second mechanical switch, the second anode coupled to a ground; a resistor coupled to the input circuit between the integrated circuit and the node, wherein in a first mode of operating, the first mechanical switch and the second mechanical switch are concurrently and reversibly switched to conducting, and in a second mode of operating, the first and second mechanical switches are concurrently and reversibly switched to nonconducting, wherein the first mechanical switch further includes an electromagnet configured to selectively switch the first mechanical switch between conducting and nonconducting; a fuse coupled to the electromagnet; and a fuse blow circuit coupled to the fuse and adapted to provide a voltage to the fuse to blow the fuse upon receipt of a fuse blow signal.