Patent ID: 8874395

Claim:
A system for determining a voltage of a voltage source, the system comprising: a measurement module comprising: an analog to digital converter, a driver, and an interface, wherein: the interface is electrically coupled with the analog to digital converter and the driver, the driver is configured to output current to charge a capacitor, after a first predefined period of time, the driver stops outputting current to pre-charge the capacitor, and after the driver has stopped pre-charging the capacitor and a second predefined period of time has elapsed, the analog to digital converter is configured to measure a voltage of the capacitor; the capacitor, wherein the capacitor is electrically coupled with the interface of the measurement module; and a switching module configured to electrically couple the interface of the measurement module and the capacitor with the voltage source at least while the driver is charging the capacitor and the analog to digital converter is measuring the voltage of the capacitor.