Patent ID: 9064649
Filing Date: 2015-06-23
Classification: H01H,H02H

Abstract:
1. A device for detecting the state of a switch, including a switch and a feed circuit of said switch, the device comprising: a detection circuit which delivers at least one of: the device further comprising said feed circuit and an adjustment circuit that includes a voltage divider having resistors, a voltage delivered by the adjustment circuit to the detection circuit being made dependent on a resistance of the switch, the adjustment circuit allowing for reading the resistance of the switch through the voltage divider, the feed circuit, and the voltage delivered to the detection circuit; and wherein at least one of: are adjusted in such a way to provide sufficient current to clean a contact of the switch based on the reading, and wherein the detection circuit includes a hysteresis circuit which delivers a first output-voltage value for an input voltage less than a first voltage threshold and a second, different output-voltage value for an input voltage greater than a second voltage threshold, and the first output-voltage value is determined based on a following expression: and the second output-voltage value is determined based on a following expression: wherein V