Patent ID: 7646120
Filing Date: 2010-01-12
Classification: H02K

Abstract:
1. An automotive alternator comprising: a case; a rotor that is disposed inside said case and that is fixed to a shaft; a stator that is disposed so as to surround said rotor and in which alternating current arises by means of a rotating magnetic field from said rotor; a rectifier that is disposed at an end portion of said shaft and that rectifies said alternating current that arises in said stator into direct current; a dielectric capacitor that is connected between a positive side and a negative side of said rectifier and that absorbs noise that arises during rectification into direct current by said rectifier, and means for suppressing heat generation within said dielectric capacitor, comprising a resisting means that suppresses current that flows to said dielectric capacitor, connected to said dielectric capacitor in series, wherein the means for suppressing the heat generation is disposed outside of a voltage regulator included in the automotive alternator.