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:
Dec. 03, 2002
Filed:
Mar. 05, 2001
Reino Juhani Hiltunen, Lieto, FI;
Raimo Kalevi Santahuhta, Lieto, FI;
Nokia Multimedia Terminals Oy, Turku, FI;
Abstract
An arrangement for transferring information between the secondary and primary circuit of a transformer wherein control information is transferred to the primary circuit of a power transformer by means of auxiliary windings in the same transformer. The auxiliary windings are arranged in pairs in the transformer core branches in such a manner that the magnetic fluxes (&PHgr; ) do not induce a voltage in the energy-transferring windings (pw , pw ), and the voltages induced in the auxiliary windings by the magnetic flux (&PHgr; ) corresponding to the energy transfer are opposite both in the primary-side winding pair (cw , cw ) and in the secondary-side winding pair (cw , cw ). Thus the transfer of a control signal and the transfer of energy will not disturb one another. The transformer may be implemented as a planar structure on a printed circuit board.