Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Reexamination Certificate
2005-05-31
2005-05-31
Nguyen, Matthew V. (Department: 2838)
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
C399S037000, C399S088000
Reexamination Certificate
active
06900994
ABSTRACT:
A power source control chip which is a high voltage controlling portion is added to an ASIC for sequence control constituting a sequence control unit. A PWM signal is sent from the high voltage controlling portion to a high voltage producing portion constituting a high voltage unit, and an output detection signal is sent from the high voltage producing portion to the high voltage controlling portion, thereby effecting feedback control. At that time, a modulated wave PWM/detection signal amplitude-modulated with the PWM signal as a carrier wave and with the output detection signal as a modulating wave is produced and is transmitted onto a signal line, whereby the number of signal lines can be decreased.
REFERENCES:
patent: 5612857 (1997-03-01), Ishikawa
patent: 5619403 (1997-04-01), Ishikawa et al.
patent: 6040662 (2000-03-01), Asayama
patent: 6408148 (2002-06-01), Yamamoto
patent: 6806445 (2004-10-01), Satoh
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