Electric power conversion systems – Current conversion – Including d.c.-a.c.-d.c. converter
Patent
1996-02-20
1997-08-26
Krishnan, Aditya
Electric power conversion systems
Current conversion
Including d.c.-a.c.-d.c. converter
G05F 1577
Patent
active
056616430
ABSTRACT:
A power supply for converting a plurality of alternating current (AC) and direct current (DC) input line voltages to a DC output voltage includes a converter for converting the input voltages to an intermediate voltage at a first node; a switching regulator having a power voltage at a second node for providing a reference voltage therefrom, and for providing a switching signal at a third node from the reference voltage and a feedback voltage; a circuit for electrically interconnecting the first node to the second node whenever the intermediate voltage exceeds a predetermined voltage; a transformer including a primary winding electrically interconnected with the first node, and a secondary winding having a secondary voltage; a feedback circuit cooperating with the transformer for providing the feedback voltage therefrom; a switching circuit responsive to the switching signal at the third node for switching an electrical current from the first node through the primary winding; and a circuit electrically interconnected with the secondary winding for converting the secondary voltage to the output voltage.
REFERENCES:
Model No. 587 Voltage and Current Surge Generator, p. 7, Velonex, 1988.
M. Brown, 1200V MOSFET Allows Switching Power Supply to Operate Over 90 to 600V Input Range with No Jumpers, pp. 1-4 Fall 1994, Power Science, vol. 1, No. 2.
Motorola, Inc., Figure 29-27 Watt Off-Line Flyback Regulator, p. 612, 1989, Linear/Switchmode Voltage Regulator Handbook, 4th Edition.
Blakely John H.
Elms Robert T.
Eaton Corporation
Krishnan Aditya
Moran Martin J.
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