Patent ID: 11885838
Assignee: GOOGLE LLC
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 14:
15. A power-measurement circuit comprising:
an integrator coupled to a main power rail, wherein the integrator stores energy on an energy-storage device, and the energy stored on the energy-storage device is representative of an amount of power provided through the main power rail during an integration cycle of the integrator, and wherein:
each integration cycle of the integrator begins when the energy stored on the energy-storage device is reset; and
each integration cycle of the integrator ends when an electrical measurement of the energy-storage device meets or exceeds a threshold; and

a counter that stores a number of integration cycles performed by the integrator during a time interval, wherein a total amount of power provided through the main power rail during the time interval is represented by:
a product of a number of integration cycles performed by the integrator during the time interval and a known total amount of energy provided to the main power rail during a single integration cycle divided by a length of the time interval; and
the energy stored on the energy-storage device.