Magnetron
    1.
    发明授权
    Magnetron 失效
    磁控管

    公开(公告)号:US4489254A

    公开(公告)日:1984-12-18

    申请号:US385399

    申请日:1982-05-19

    IPC分类号: H01J23/02 H01J23/05 H01J25/50

    CPC分类号: H01J23/05 H01J23/02

    摘要: Disclosed is a magnetron for a microwave oven which has a drain electrode (60) near a cathode (25) and in a position where an electron beam path is not interfered with. The cathode and the drain electrode are formed in spiral shapes. Turns of the cathode are alternately arranged with those of the drain electrode. When the magnetron is operated, the drain electrode is kept at the same potential as the cathode or is kept at a negative potential relative to that of the cathode. Therefore, positive ions in the vicinity of the cathode are collected at the drain electrode, thus decreasing high frequency noise.

    摘要翻译: PCT No.PCT / JP81 / 00250 Sec。 371日期1982年5月19日 102(e)日期1982年5月19日PCT提交1981年9月22日PCT公布。 公开号WO82 / 01101 日期为1982年4月1日。公开是用于微波炉的磁控管,其具有靠近阴极(25)的漏电极(60)并且电子束路径不受干扰的位置。 阴极和漏电极形成为螺旋状。 阴极的匝与漏电极的交替排列。 当磁控管工作时,漏电极保持与阴极相同的电位,或者相对于阴极保持在负电位。 因此,阴极附近的正离子被收集在漏电极处,从而降低高频噪声。

    High efficiency power amplifier
    2.
    发明授权
    High efficiency power amplifier 失效
    高效率功率放大器

    公开(公告)号:US5434540A

    公开(公告)日:1995-07-18

    申请号:US309578

    申请日:1994-09-21

    CPC分类号: H03F3/2176

    摘要: In a high efficiency F-class amplifier, output current may be reduced to cause distortion of the current, or deterioration of high efficiency operation of the amplifier, when an instantaneous output voltage of an amplifying transistor becomes lower than a saturation voltage. To prevent this, the peak value of the high freqency instantaneous output voltage is restricted by a peak value restricting circuit provided in parallel to a load. Thus, an ideal high efficiency amplifier can be provided by avoiding distortion of the output current.

    摘要翻译: 在高效率的F级放大器中,当放大晶体管的瞬时输出电压变得低于饱和电压时,可以减小输出电流,引起电流的失真或放大器的高效率运行的劣化。 为了防止这种情况,高频瞬时输出电压的峰值受到与负载并联设置的峰值限制电路的限制。 因此,可以通过避免输出电流的失真来提供理想的高效放大器。