Owner Whirlpool S.A.

Inventors Ribeiro Duarte, Ronaldo

Agent Spruson & Ferguson

Pub. Number AU-B-2004309854

PCT Pub. Number WO2005/064794

Priority PI 0305983-9 30.12.03 BR

Filing date 15 December 2004

Wipo publication date 14 July 2005

Acceptance publication date 15 July 2010

H03K 17/13 (2006.01) Electronic switching or gating, i.e. not by contact-making and -breaking - Modifications for switching at zero crossing

H02M 5/257 (2006.01) Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases

H03K 17/14 (2006.01) Electronic switching or gating, i.e. not by contact-making and -breaking - Modifications for compensating variations of physical values, e.g. of temperature

H03K 17/72 (2006.01) Electronic switching or gating, i.e. not by contact-making and -breaking - Bipolar semiconductor devices with more than two PN junctions, e.g. thyristors, programmable unijunction transistors, or with more than three electrodes, e.g. silicon controlled switches, or with more than one electrode connected to the same conductivity region, e.g. unijunction transistors