System and method for switch status detection
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United States of America Patent
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Feb 20, 2018
Grant Date -
Jun 23, 2016
app pub date -
Dec 17, 2014
filing date -
Dec 17, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Systems, methods, and circuits for determining one or more switch statuses are disclosed herein. In one example embodiment, such a system for determining a status of a switch having first and second terminals includes a first port configured to be coupled to the first terminal, a second port configured to be coupled to the second terminal, and a capacitor coupled between the first port and ground. Additionally, the system includes a comparator device having first and second input ports and an output port, the first input port being coupled at least indirectly to the first port, a current source coupled to the first input port, and a voltage source coupled between the second port and the second input port. The comparator device is configured to provide an output signal at the output port that is at least sometimes indicative of the status of the switch.
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