Posted on March 13th, 2009 by TechNews
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(19) RU (11) 2349008 (13) C1
(51) IPC
H01Q 21/00 (2006.01)
(12) DESCRIPTIONS OF INVENTION To the patent of Russian Federation
Status: of 11.03.2009 – there are no data
Document: PDF
(21) Application number registered: 2007133483/09
(22) Application filing date: 2007.09.06
(24) Date started of validity of the patent: 2007.09.06
(45) Date: [...]
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Posted on March 11th, 2009 by TechNews
» Get full text of these Russian patents (in Russian)
» English translation of these Russian patents
(19) RU (11) 2349000 (13) C1
(51) IPC H01H 39/00 (2006.01)
(12) DESCRIPTIONS OF INVENTION To the patent of Russian Federation
Status: of 03.03.2009 – there are no data
(21) Application number registered: 2008101626/09
(22) Application filing date: 2008.01.15
(24) Date started of validity of the patent: [...]
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Posted on March 5th, 2009 by TechNews
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(54) METHOD OF CONVERTING DC VOLTAGE INTO QUASI-SINUSOIDAL VOLTAGE WITH PULSE-WIDTH MODULATION (VERSIONS)
FIELD: electricity.
SUBSTANCE: proposed method of converting dc voltage into quasi-sinusoidal voltage with pulse-width modulation can be used in control systems of frequency converters. The conversion method involves [...]
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