Patent ID: 8982527
Filing Date: 2015-03-17
Classification: F02N,H01H

Abstract:
1. A driver circuit system for driving a relay circuit, the driver circuit system comprising: a first switch connected to a relay circuit; a second switch connected to a battery supply for the relay circuit; a voltage source that is other than the battery supply; a comparator, wherein the comparator comprises: a first diode, wherein the cathode of the first diode is connected to the first switch; a second diode, wherein the anode of the first diode is connected to the anode of the second diode; a third diode, wherein the cathode of the third diode is connected to the second switch; a driver transistor, wherein the cathode of the second diode is connected to the gate of the driver transistor and the anode of the third diode is connected to the driver transistor, wherein the relay circuit comprises a relay coil, wherein the battery supply for the relay circuit is connected to one terminal of the relay coil and the second switch, and wherein another terminal of the relay coil is connected to the anode of the third diode, the driver transistor, and the first switch.