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US RE29,510 EGranted
High efficiency switching drive for a resonate power transformer
AssigneeTektronix, Inc.
InventorGeorge Robert Hull
Life of this patent
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Abstract
A high efficiency switching drive for a resonate power transformer having the ability to maintain a constant output voltage over a wide range of source voltage variation while maintaining good power conversion efficiency is provided. A transistorized class-C oscillator has means to saturate the transistors during conduction time to allow the transistor voltage to remain small as opposed to a current source as in the conventional class-C oscillator.
Claims6
A circuit for improving the efficiency of an energy conversion apparatus, comprising:
- a resonate transformer having primary windings and secondary windings electromagnetically coupled thereto for converting the energy;
- means, coupled to said primary windings, for storing energy [developed by said primary windings];
- first switch means coupled to said means for storing energy, said first switch means having a first condition and a second condition;
- means for impressing a potential of an external energy source across said primary windings and said means for storing energy in said first condition of said first switch means;
- and
- second switch means coupled to said primary windings and operatively disposed across said means for storing energy in said second condition of said first switch means for impressing energy stored in said first condition to said primary windings thereby improving efficiency of the apparatus.
3 more elements
Dependencies are inferred from the claim text.