| US 7,499,293 B2 | ||
| High voltage pulse power circuit | ||
| Tatsuya Terazawa, Kasugai (Japan); and Takao Saito, Nagoya (Japan) | ||
| Assigned to NGK Insulators, Ltd., Nagoya (Japan) | ||
| Filed on Mar. 08, 2007, as Appl. No. 11/683,552. | ||
| Application 11/683552 is a continuation of application No. PCT/JP2006/305079, filed on Mar. 15, 2006. | ||
| Claims priority of application No. 2005-189919 (JP), filed on Jun. 29, 2005. | ||
| Prior Publication US 2007/0210837 A1, Sep. 13, 2007 | ||
| Int. Cl. H02M 3/335 (2006.01); H02M 7/515 (2007.01); H02H 7/122 (2006.01) | ||
| U.S. Cl. 363—21.04 [363/21.1; 363/135; 363/57] | 15 Claims |
| 1. An electric circuit comprising:
a first circuit having a first semiconductor switch; and
a second circuit for commutating a current based on turn-off of said first semiconductor switch;
said second circuit having a second semiconductor switch which is turned on while being reverse-biased during at least a final
stage of a period in which said first semiconductor switch is turned on,
wherein said first circuit is connected between a primary winding terminal of a transformer and a DC power supply, and said
second circuit is connected between a secondary winding terminal of said transformer and a load.
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