Electricity: power supply or regulation systems – Output level responsive – Using a three or more terminal semiconductive device as the...
Reexamination Certificate
2007-11-06
2007-11-06
Berhane, Adolf (Department: 2838)
Electricity: power supply or regulation systems
Output level responsive
Using a three or more terminal semiconductive device as the...
Reexamination Certificate
active
10582870
ABSTRACT:
Switching elements M1, M2, M3are connected in series between the positive and negative lines carrying DC current supplied through a rectifier circuit2from an AC power supply1or directly supplied from a DC power source. The switching elements M1, M2, M3are on/off controlled by a high-frequency signal. An inductor L1and a capacitor C1are inserted between a connection node a and a load terminal c. An inductor L2and a capacitor C2are inserted between a connection node b and a load terminal d. The phases of on/off of the switching elements M1, M3are the same, and the phase of on/off of the switching element M2is opposite to them. Without using any transformer, not only insulation against DC but insulation against AC is adequately ensured.
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Yuji Sayama et al., “Condenser Zetsuen ni yoru DC-DC Converter”, The Institute of Electrical Engineers of Japan Handotai Denryoku Henkan Kenkyukai Shiryo, Jan. 29, 1994, vol. SPC-94, No. 15 to 24, pp. 27 to 36.
Berhane Adolf
Nitta Corporation
Rabin & Berdo P.C.
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