Apparatus and method for high-frequency operation in a...

Details Apparatus and method for high-frequency operation in a... Apparatus and method for high-frequency operation in a...

H - Electricity

02

J

H02J 7/02 (2006.01) H02M 5/00 (2006.01) H02M 7/00 (2006.01) H02M 7/06 (2006.01) H02M 7/217 (2006.01)

Patent

CA 2441920

A battery charger includes line-level input rectification, a high- frequency oscillator-controlled chopper circuit, multiple transformers operating in parallel, and controlled output rectification. Ilse of line-level input rectification reorders the elements of the battery charger compared to previous designs. A chopper frequency several orders of magnitude higher than that of the AC power mains is used. The use of multiple, parallel-wired transformers for voltage and current transformation eases constraints on the physical geometry of a manufactured battery charger product by permitting individual transformers, each smaller than a comparable single transformer, to be employed. Controlled output rectifiers permit power levels to be regulated dynamically.

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