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:
Oct. 16, 2007
Filed:
Mar. 25, 2003
Salvatore Melis, Rivoli, IT;
Kamal Mourad, Turin, IT;
Claudio Priotti, Cavour, IT;
Sila Holdings Industriale S.p.A., Nichelino, IT;
Abstract
An interface circuit is described for use between a direct-current voltage source and a circuit for the pulsed driving of a load such as an electric motor, in parallel with which at least one high-capacitance capacitor is connected, the interface circuit comprising The interface circuit comprises a first supply terminal and a second supply terminal which are intended operatively to be connected to the voltage source, permanently and temporarily, respectively. A circuit for controlling current conduction in the MOSFET transistor is connected to the gate of the transistor and, each time it receives an activation signal, brings about an initial transitory stage in which a progressively increasing current is conducted through the transistor and in which the transistor is operating in the linear region of its characteristic, and a subsequent, or steady-state stage in which the transistor is operating in conditions of substantial saturation. An enabling circuit is connected to the second supply terminal to keep the MOSFET transistor non-conductive when the second supply terminal is disconnected and to supply an activation signal to the circuit for controlling current conduction when that terminal is connected to the voltage source.