The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 2009
Filed:
May. 25, 2005
Sebastiano Acquaviva, Pino Torinese, IT;
Domenico Diacono, Asti, IT;
Sebastiano Acquaviva, Pino Torinese, IT;
Domenico Diacono, Asti, IT;
Emerson Appliance Motors Europe S.r.l., Moncalieri (Turin), IT;
Abstract
The drive circuit () includes a processing and control circuit () comprising a protection circuit (), designed to generate at its output a logical inhibiting signal (C) starting from every zero crossing of the motor supply volts (V), the inhibiting signal (C) having a predetermined duration (t) which is less than a quarter of the period of the supply voltage (V); and an enabling circuit (), connected to a sensor of the position of the rotor () and designed to enable a first and a second controlled conduction device () associated with the stator winding () to conduct current alternately, in synchronization with the signal (H) supplied by the position sensor (). The enabling circuit () is connected to the protection circuit () in such a way that the conduction of current through the controlled conduction device () enabled at any time is inhibited for the duration (t) of the inhibiting (C).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile