Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1990-09-04
1991-04-09
Beha, Jr., William H.
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
363 49, H02M 3337
Patent
active
050069721
ABSTRACT:
The invention converts the voltage output of a DC source to a higher voltage. A germanium transistor start-up circuit receives a DC supply voltage input and includes an astable multivibrator which produces a square wave voltage output that is transformed to a substantially DC steady-state voltage output by a transformer and a capacitor. This elevated voltage is provided to an oscillator circuit which provides two square wave outputs. Each output is provided to an array of invertors operably coupled to an array of field effect transistors. The transistors are operably coupled to a power transformer. The square wave outputs of the power transformer are full wave rectified to provide a DC output having a higher voltage than the system input voltage. The power transformer also provides another full wave rectified voltage which disables the start-up circuit to eliminate parasitic energy losses attributable to its continued oscillation.
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patent: 4695935 (1987-09-01), Oen et al.
Mele, "100-kHz DC/DC Converter Uses FET's", EDN, vol. 25, No. 17, p. 1912, ep. 20, 1980.
Durgavich, "Compact DC-DC Converter Yields +15V from +5V," Electronics, vol. 48, No. 12, p. 103, Jun. 12, 1975.
Blockl et al., "New Solid State Components Simplify and Improve Switching Power Supplies," Siemens Components XV, Sep. 1980, No. 4, p. 181-186.
Hammond Russell E.
Henry John L.
Beha Jr. William H.
Fendelman Harvey
Kagan Michael A.
Keough Thomas G.
The United States of America as represented by the Secretary of
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