HIGH FREQUENCY POWER SUPPLY DEVICE

PURPOSE: A high frequency power supply device is provided to prevent a change generation in the mean value of high frequency power in case a high frequency power is supplied as a load in a different high frequency power supply device and prevent the degradation of an output control through the perfo...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: UMEHARA MASAO, HAMAISHI SATORU, MAEHARA DAISUKE, IKENARI TATSUYA, NAKAMORI YUYA
Format: Patent
Sprache:eng ; kor
Schlagworte:
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Beschreibung
Zusammenfassung:PURPOSE: A high frequency power supply device is provided to prevent a change generation in the mean value of high frequency power in case a high frequency power is supplied as a load in a different high frequency power supply device and prevent the degradation of an output control through the performance of the output control for evenly maintaining the mean value of high frequency power. CONSTITUTION: A high frequency power supply device includes a high frequency power generating unit(4) comprised in order to output a high frequency power for supplying to a load; a high frequency power detecting unit(801) detecting the mean value of high frequency power which is a control object in the output side of the high frequency power generating unit; an activation amount calculating unit(802) comprised in order to calculate an activation amount for maintaining the detected mean value of high frequency power in a set value; and a control part(8) including a control signal output unit(803) comprised in order to output a control signal given to the high frequency power generating unit. [Reference numerals] (1) Commercial power supply; (10) Power change period detecting unit; (11) Control period setting means; (2) DC power supply unit; (20) Different frequency power supply source; (201) Rectifier circuit; (202) Inverter; (203) Rectifier and smoothing circuit; (3) High frequency power amplifying unit; (4) High frequency power generating unit; (5) Directional coupler; (6) Impedance matching unit; (7) Load; (8) Control part; (801) High frequency power detecting unit; (802) Duty ratio calculating unit(activation amount calculating unit); (803) Control signal output unit; (804) Timing controller; (AA) Power setting value;