Claims
- 1. A magnetron drive power supply comprising:a unilateral power supply for converting a commercial power supply into a unilateral power supply; a rectification filter section for rectifying and smoothing said unilateral power supply; an inverter section for converting said unilateral power supply provided through said rectification filter section into a high-frequency AC voltage as at least one semiconductor switching element is turned on/off; a step-up transformer for stepping up an output of said inverter section; and a high-voltage circuit comprising: two high-voltage capacitors in bare-chip states; and two high-voltage diodes, wherein said high voltage circuit is for full-wave voltage doubling and voltage rectifying of an output of said step-up transformer, and wherein said high-voltage circuit is provided as a unit molded of a resin.
- 2. The magnetron drive power supply of claim 1 with said high-voltage circuit further comprising a discharge resistor for discharging a voltage charge across said high-voltage capacitors.
- 3. The magnetron drive power supply of claim 2 wherein said high-voltage diodes are in bare-chip states.
- 4. A magnetron drive power supply comprising:a unilateral power supply for converting a commercial power supply into a unilateral power supply, a rectification filter section for rectifying and smoothing said unilateral power supply, an inverter section for converting said unilateral power supply provided through said rectification filter section into a high-frequency AC voltage as at least one semiconductor switching element is turned on/off, a step-up transformer for stepping up an output of said inverter section, and a high-voltage circuit provided as a unit molded of a resin for full-wave rectifying and voltage doubling an output of said step-up transformer, said high-voltage circuit comprising: two high-voltage capacitors, wherein said two high-voltage capacitors are each in a bare-chip state before being molded in said resin; and two high-voltage diodes, wherein said two high-voltage diodes are each in a bare-chip state before being molded in said resin.
- 5. The magnetron drive power supply of claim 4 wherein said two high-voltage capacitors and said two high-voltage diodes are brought close to each other to miniaturize said high-voltage circuit, wherein said high-voltage circuit becomes a single one-piece component.
- 6. The magnetron drive power supply of claim 5 with said high-voltage circuit further comprising a discharge resistor for discharging a voltage charge across said high-voltage capacitors.
- 7. The magnetron drive power supply of claim 6 further comprising terminal pins for connecting to an external circuit.
- 8. The magnetron drive power supply of claim 4 with said high-voltage circuit further comprising a discharge resistor for discharging a voltage charge across said high-voltage capacitors.
- 9. A magnetron drive power supply comprising:a unilateral power supply for converting a commercial power supply into a unilateral power supply, a rectification filter section for rectifying and smoothing said unilateral power supply, an inverter section for converting said unilateral power supply provided through said rectification filter section into a high-frequency AC voltage as at least one semiconductor switching element is turned on/off, a step-up transformer for stepping up an output of said inverter section, and a high-voltage circuit provided as a unit molded of a resin for half-wave rectifying and voltage doubling an output of said step-up transformer, said high-voltage circuit comprising: a high-voltage capacitor in a bare-chip state before being molded in said resin; and a high-voltage diode in a bare-chip state before being molded in said resin.
- 10. The magnetron drive power supply of claim 9 with said high-voltage circuit further comprising a discharge resistor for discharging a voltage charge across said high-voltage capacitor.
Priority Claims (1)
Number |
Date |
Country |
Kind |
11-167923 |
Jun 1999 |
JP |
|
Parent Case Info
This application claims the benefit of International Application Number PCT/JP00/03865, which was published in English.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
PCT/JP00/03865 |
|
WO |
00 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO00/78099 |
12/21/2000 |
WO |
A |
US Referenced Citations (5)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0 921 712 |
Jun 1999 |
EP |