High voltage generator

Details High voltage generator High voltage generator

1992-08-07

1994-01-11

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 97, 315411, 358190, H02M 3335, H04N 3185

Patent

active

052787460

ABSTRACT:
In a high voltage generator including a flyback transformer having a low-voltage coil and a high-voltage coil, a first switching element is disposed in a current path between a drive power source, the low-voltage coil and ground. The first switching element is turned on and off so as to charge and discharge a resonance capacitor, thereby generating flyback pulses. An output voltage of the high-voltage coil is detected. A peak value of the flyback pulse is controlled based on the detected output voltage so as to stabilize the output voltage of the high-voltage coil. A second switching element is located in the current path between the drive power source, the low-voltage coil and ground. The second switching element is turned on the moment the first switching element is turned off, thereby transferring electrical energy stored in the low-voltage coil to the resonance capacitor. After the transfer of the electric energy, a charging capacitor is charged by an inverse current flowing from the resonance capacitor to the drive power source.

REFERENCES:
patent: 4234827 (1980-11-01), Willis
patent: 4614899 (1986-09-01), Webb et al.
patent: 4823248 (1989-04-01), Ikeuchi et al.
patent: 4931716 (1990-06-01), Jovanovic et al.
patent: 5019953 (1991-05-01), Kawaberi et al.
patent: 5189599 (1993-02-01), Messman

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