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:
Mar. 07, 2006
Filed:
May. 06, 2004
Magnus Lindmark, SE-114 59 Stockholm, SE;
Magnus Lindmark, SE-114 59 Stockholm, SE;
Other;
Abstract
The present invention relates to a power unit with a self-oscillating series resonance converter for feeding of a load. The series resonance converter comprises: two transistors TR, TRcoupled together, which are arranged to individually be affected by a control transformer T, a series connection of an inductor Land a capacitor C, and means to change the oscillating frequency of the transistors TR, TRand thereby the output voltage of the power unit. Each transistor TR, TRtogether with the series coupled discharging capacitor C, Cor additional transistor TR, TRbelonging thereto is connected in parallel with said inductor L, capacitor Cand control transformer T. The means to change the oscillating frequency of the transistors comprises a control oscillator OSC that in an alternating manner sends pulses that turns off the transistor TR, TRthat conducts current and thereby the oscillating frequency of the transistors is controlled by the pulse frequency of the control oscillator OSC.