Title:
POWER SUPPLY UNIT FOR HIGH VOLTAGE GENERATION
Document Type and Number:
Japanese Patent JP3755975
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce unnecessary pulse, and suppress generation of noise harmful to a screen by providing a second diode whose anode is connected to the connection part between a resonant capacitor and the cathode of the first diode, and whose cathode is connected to the high voltage side of a primary coil main winding.
SOLUTION: A damper diode 5 for flowing damper current during a damper period is connected to a switch element 3 through a diode 4. One end of a primary coil sub-winding 6 is connected to the ground, and the other end is connected to the first diode 7. A resonant capacitor 8 is connected between the ground. The resonant capacitor 8 is connected to a point B on a primary coil main winding 2 through the second diode 9. A resistor 10 is connected between the point B and the resonant capacitor 8, or both ends of the second diode 9. Therefore, AC component generated between them flows through the resistor 10, thus it is possible to attenuate the AC element rapidly.
Inventors:
Mitsuo Otsu
Application Number:
JP30583897A
Publication Date:
March 15, 2006
Filing Date:
November 07, 1997
Export Citation:
Assignee:
Hitachi Media Electronics Co., Ltd.
International Classes:
H02M3/28; H04N3/185; H01F19/04; (IPC1-7): H02M3/28; H01F19/04; H04N3/185
Domestic Patent References:
| JP2531008B2 | ||||
| JP11103575A |
Attorney, Agent or Firm:
Kenjiro Take
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