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:
Mar. 03, 2015

Filed:

Mar. 25, 2011
Applicant:

Hisahiro Kamata, Iwanuma, JP;

Inventor:

Hisahiro Kamata, Iwanuma, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 7/537 (2006.01); H02M 3/335 (2006.01); H02M 7/48 (2006.01);
U.S. Cl.
CPC ...
H02M 7/48 (2013.01); H02M 2007/4815 (2013.01); Y02B 70/1441 (2013.01);
Abstract

The high voltage inverter device receives, as an input voltage, a DC voltage or a voltage within Safety Extra Low Voltage composed of a DC component with a pulsating flow superposed thereon. The input voltage is switched by a switching element to pass an exciting current to excitation windings on a primary side of a plurality of separate transformers having same characteristics to simultaneously excite the excitation windings. Output windings of the plurality of transformers are connected in parallel or in series with one another, and time axes of waveforms of output voltages of the output windings are synchronized. Thereby, a high-power high voltage is outputted continuously, stably, and safely from both ends of the output windings connected in parallel or in series.


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