Patent ID: 6731098
Filing Date: 2004-05-04
Classification: H02H

Abstract:
A system for sensing alternator current levels, the combination comprising:an operational amplifier having an input and an output; an input resistor connecting the input to a signal indicative of an alternator current level; a feedback resistor connected between the input and the output; an adjustment resistor and a switching element coupled in series between the input and the output, in parallel with the feedback resistor; and a processor coupled to the output and being operable, based upon a current indication related to a level of alternator current indicated at the output, to control the operation of the switching element such that the switching element is closed when the current indication increases to exceed a first threshold, and such that the switching element is opened when the current indication decreases to fall below a second threshold, wherein the signal indicative of the alternator current level provided to the input resistor and the level of alternator current indicated at the output are related by a first gain when the switching element is closed and are related by a second gain when the switching element is opened.