Patent ID: 6765516
Filing Date: 2004-07-20
Classification: G01R,H03M

Abstract:
A root-mean-square (RMS) meter, comprising:an RMS converter having a converter input and a converter output, wherein the RMS converter converts a time varying signal applied to the converter input to a signal at the converter output, wherein the value of the signal at the converter output is indicative of the RMS value of the applied signal, and wherein the signal at the converter output comprises a non-time varying component and a time varying component as determined by a time constant of the RMS converter; an inverting amplifier having an inverter input and an inverter output, wherein the converter output is connected to the inverter input; and a switch having first, second, and central contacts, wherein the converter output is connected to the first contact, wherein the inverter output is connected to the second contact, wherein when the switch is in a first position, the first contact is connected to the central contact, and wherein when the switch is in a second position, the second contact is connected to the central contact.