Patent ID: 8559262
Filing Date: 2013-10-15
Classification: G01R

Abstract:
1. A verification circuit for a capacitor power supply, comprising: (a) logic to measure at least two voltages across the terminals of the capacitor at two points in time, the two points in time defining a time interval dT; (b) logic to determine a change in voltage dV over the time interval dT, the change in voltage defined by the two voltages that are measured; and (c) logic to determine whether to initiate an operation powered by the capacitor, by deriving a total required time or a total required voltage for completing the operation from the time interval dT and/or the voltage change dV, and comparing the total required time or total required voltage to a pre-determined necessary total time or predetermined necessary total voltage, respectively, for completing the operation; wherein the acts performed in (a)-(c) are collectively a “time interval test”.