Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Reexamination Certificate
2007-05-29
2007-05-29
Nguyen, Matthew V. (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
C323S223000, C315S122000
Reexamination Certificate
active
11066275
ABSTRACT:
A redundancy circuit for a diode circuit composed of a plurality of diodes connected in series, according to the present invention, includes: bypass circuits, each of which is connected in parallel to each group, the diode circuit being divided into a plurality of group, each group having one or more diodes connected in series, and each bypass circuit including a first voltage-controlled switching device connected in parallel to the corresponding group, and a detection circuit which has a constant voltage device and a fusing circuit, both of which are connected in series, the detection circuit being connected in parallel to the corresponding group; and when, because of increased resistance of any diode, a voltage applied to one of the groups exceeds a given voltage defined by the constant voltage device, the voltage-controlled switching device is turned on so as to bypass a current that is to pass through the corresponding group, whereby continuing the operation of the whole apparatus even when one or more diodes are broken down.
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Iwabuki Hiroyasu
Iwata Akihiko
Mitsubishi Denki & Kabushiki Kaisha
Nguyen Matthew V.
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