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    • 8. 发明授权
    • Power supply unit, high-frequency circuit system and heater voltage control method
    • 电源单元,高频电路系统和加热器电压控制方式
    • US07800311B2
    • 2010-09-21
    • US12050609
    • 2008-03-18
    • Akira ChibaYukihira Nakazato
    • Akira ChibaYukihira Nakazato
    • H05B39/04
    • H01J19/16H01J1/13H01J23/04H01J25/34H03B9/08
    • At the time of restoration of the power supply after a power failure, a voltage higher than that in the normal operation mode is supplied to a heater. After a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of an electron tube is output. Alternatively, at the time of power activation, the rate of change of current flowing through a heater is determined for every period of time. When the rate of change becomes equal to or lower than a predetermined threshold, a voltage higher than that in the normal operation mode is supplied to the heater, and after a lapse of a predetermined time, the voltage to be supplied to the heater is switched into the voltage in the normal operation mode while a control signal for stating the operation of the electron tube is output.
    • 在停电后恢复供电时,向加热器供给高于正常运行模式的电压。 在经过预定时间之后,在输出用于说明电子管的操作的控制信号的同时,将要供给加热器的电压切换到正常工作模式的电压。 或者,在动力激活时,每一段时间确定流过加热器的电流的变化率。 当变化率变得等于或低于预定阈值时,比加热器提供高于正常操作模式的电压,并且在经过预定时间之后,切换到加热器的电压被切换 输出用于表示电子管的操作的控制信号的正常操作模式中的电压。