Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source
Reexamination Certificate
2006-05-23
2006-05-23
Riley, Shawn (Department: 2838)
Electrical transmission or interconnection systems
Plural supply circuits or sources
Substitute or emergency source
Reexamination Certificate
active
07049712
ABSTRACT:
The push-pull converter for zero-voltage switching of the switches on the primary side of the transformer to have a relatively lower loss is proposed. Which includes: a transformer having a primary winding with a center tap and a secondary winding, an electrical energy storage device having a first terminal coupled to the center tap of the primary winding and a second terminal coupled to a ground, a first switch having a first terminal coupled to a first terminal of the primary winding and a second terminal coupled to the ground, a second switch having a first terminal coupled to the ground and a second terminal coupled to a second terminal of the primary winding, and a rectifier circuit coupled to the secondary winding for transforming an AC output of the secondary winding to a DC output.
REFERENCES:
patent: 5790391 (1998-08-01), Stich et al.
Lin Hua
Tsai Wen-Yin
Ying Jianping
Zhu Qiuhua
Delta Electronics , Inc.
Riley Shawn
Volpe and Koenig P.C.
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