The present invention concerns a device for producing a gas plasma by ionisation of a gas using a microwave source of determined nominal power (Pn), comprising a magnetron 7 receiving its electric energy from a supply circuit.This device is characterized in that the power (Pd) delivered by the supply circuit to the magnetron 7 is no more than one quarter of the nominal power (Pn) of the magnetron 7.本發明關於一種用以產生一氣體電漿之裝置,藉由使用一預定標稱功率(Pn)之微波源將一氣體離子化,該裝置包括一由一供電電路接收電能之磁電管(7)。本發明之裝置的特徵在於藉該供電電路傳送至該磁電管(7)的該功率(Pd)不大於該磁電管(7)之標稱功率(Pn)的四分之一。1...變壓器1b...第二電路A、B...端子C...電容D...二極體7...磁電管8...波導9...腔共振器
