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:
Aug. 30, 1988
Filed:
Dec. 03, 1986
Michel Nollet, Noisy Le Roi, FR;
Thomson-Lgt Laboratoire General des Telecommunications, Conflans Sainte Honorine, FR;
Abstract
A circuit for high speed control a field effect power transistors. This circuit has a transformer with a primary winding and a secondary winding. The secondary winding transmits control signals to gates of the field effect power transistors. An energy storage structure is coupled to the transformer, and stores energy required for controlling the gates of the field effect power transistors. This energy is stored during an inactive phase of the control signal. A transmission structure is coupled to the transformer, and is fed with energy stored in the energy storage structure. In this way, the transmission structure uses energy stored in the energy storage structure to supply the control signals to the gates of the field effect power transistors. Therefore, the secondary of the transformer is not loaded during this time. At other times, the transmission structure isolates the output of the transformer from the rest of the circuit.