Patent ID: 11907471
Assignee: SIGMASENSE, LLC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A drive-sense circuit coupled to a variable current load, wherein the drive-sense circuit comprises:
an impedance reference circuit operable to:
generate an impedance reference signal;

a regulated voltage source circuit operable to:
generate a regulated voltage signal based on an analog regulation signal, wherein the regulated voltage signal is provided on a line to the variable current load to keep a load impedance on the line substantially matching the impedance reference signal, and wherein a current of the variable current load affects the regulated voltage signal; and

a voltage loop correction circuit operable to:
generate a comparison signal based on the impedance reference signal and the load impedance, wherein the comparison signal represents the current, and wherein the analog regulation signal is representative of the comparison signal.