Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1978-12-04
1980-11-04
Beha, Jr., William H.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 90, 363101, H02P 1304, H02P 1326
Patent
active
042323630
ABSTRACT:
This closed loop potential regulated ac-dc power supply comprises a power transformer having two secondary windings and a compensating transformer having two compensating windings connected individually in series circuit with the principal power supply secondary windings. The other secondary windings on the power transformer supply exciting windings for compensating variations in output potential by control of the compensating transformer control circuitry which has an input circuit connected across the load and an output for varying the ac supply to the exciting windings inversely of variations in load potential. A differential amplifying circuit is used for determining the load potential error and driving a transistor effectively to insert a dc component in inverse feedback relationship into the exciting windings of the compensating transformer. As the output potential error increases, the control current is decreased, and conversely. The change in control current flow is enhanced in that the transistor responds immediately to the change in the output potential and additionally by the operation of the differential amplifying circuit.
REFERENCES:
patent: 3065399 (1962-11-01), McNamee
patent: 3525035 (1970-08-01), Kakalec
patent: 3761797 (1973-09-01), Spooner
patent: 3824449 (1973-05-01), Hase
patent: 3894280 (1975-07-01), Bishop et al.
patent: 4001665 (1977-01-01), Wisner et al.
patent: 4030025 (1977-06-01), Kakalec
patent: 4068157 (1978-01-01), Bassett
patent: 4150423 (1979-04-01), Boschert
Higuchi Hobart A.
Yee Sammy K.
Beha Jr. William H.
International Business Machines - Corporation
Roush George E.
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