Electric power conversion systems – Current conversion – Including automatic or integral protection means
Patent
1998-02-26
1999-11-30
Wong, Peter S.
Electric power conversion systems
Current conversion
Including automatic or integral protection means
363 53, 363 56, 361115, H02H 700, H02H 7125, H01H 7300
Patent
active
059953942
ABSTRACT:
A first MOS transistor of a specific conductive type and a second MOS transistor of the specific conductive type are combined in an electrostatic circuit protection. In the first MOS transistor, a drain thereof is connected to an output terminal or an input terminal and a source thereof is connected to a first power terminal. The first MOS transistor is turned on/off by a signal received by a gate or ordinarily turned off by holding the gate at a specific potential. In the second MOS transistor of the specific conductive type, a drain thereof is connected to the output terminal or the input terminal and a source thereof is connected to a gate of the first MOS transistor. The second MOS transistor is ordinarily turned off by connecting a gate thereof to the first power terminal.
REFERENCES:
patent: 3702962 (1972-11-01), Wohr et al.
patent: 4133026 (1979-01-01), Hausler
patent: 4148088 (1979-04-01), Meroni
patent: 5187651 (1993-02-01), Ekstrom
patent: 5627738 (1997-05-01), Lubomirsky et al.
patent: 5668418 (1997-09-01), Carlsson et al.
P.ang.lsson Rolf
Svensson Kjell
Asea Brown Boveri AB
Va Bao Q.
Wong Peter S.
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