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.

Date of Patent:
May. 28, 2013

Filed:

Jan. 23, 2012
Applicants:

Patrick L. Chapman, Austin, TX (US);

Trishan Esram, Urbana, IL (US);

Inventors:

Patrick L. Chapman, Austin, TX (US);

Trishan Esram, Urbana, IL (US);

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02H 7/122 (2006.01);
U.S. Cl.
CPC ...
Abstract

Reverse recovery avoidance when converting power is provided. A first switch and second switch may be operated to supply an AC load with positive current, respective to the AC load, from a DC power source. A third and fourth switch may be operated to supply the AC load with negative current, respective to the AC load, from the DC power source. Four diodes may be employed with the switches. One diode may conduct the positive current when the first switch is off and the second switch is on. Another diode may conduct the negative current when the third switch is off and the fourth switch is on.


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