METHOD AND APPARATUS FOR MEASURING RMS VALUES OF BURST-FIRED CURRENTS

摘要

An apparatus (24) for measuring RMS values of burst-fired currents includes a current sensor (26) having a signal output, an analog-to-digital (A/D) converter (30) coupled to the signal output of the current sensor, a digital processor (32/32') coupled to an output of the A/D converter, and a digital memory (48/50/52) coupled to the digital processor. Code segments stored in the digital memory are executable on the digital processor and implement a process of: a) initially sampling the output of the A/D converter; b) determining from the initial sampling a burst-fired current pattern; c) sampling the output of the A/D converter N times within a burst-fired current pattern to provide N samples; and d) calculating an RMS value from the N samples.