High-frequency power source device for magnetron
专利汇可以提供High-frequency power source device for magnetron专利检索，专利查询，专利分析的服务。并且PURPOSE:To perform rapid heating of a heater at the beginning of power application so as to prevent a high voltage from being generated between an anode and a cathode, by setting an output level at the beginning of power application to be larger than a prescribed value and making a primary current flow in an input coil of a transformer for the longer hours, the larger the output level is set. CONSTITUTION:When a power source 1 is turned on, a controlling level for startup is set larger than a prescribed value by a controlling circuit 2 and then a switching element 3 is driven. The element 3 is controlled on and off so that a ratio of its on time to its off time is made large comparatively. Consequently a magnetron voltage becomes a voltage V2 which is larger than a steady value. As a frequency of a heating voltage of a heater is lowered, the voltage value is increased so that the current of the heater increases. The heater is heated rapidly to raise the temperature and to operate a magnetron 9 in a critical state. After the heater attains to the prescribed temperature, the magnetron 9 is operated in the steady state. After a prescribed time, an output level of the power source 1 is exchanged into a value smaller than the preset one by the use of a time setting circuit 10, and the element 3 is driven by the circuit 2 so as to obtain a corresponding output power.，下面是High-frequency power source device for magnetron专利的具体信息内容。
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