Load limiting circuit and method for limiting the output impedance seen
by an amplifier
    1.
    发明授权
    Load limiting circuit and method for limiting the output impedance seen by an amplifier 有权
    用于限制放大器看到的输出阻抗的负载限制电路和方法

    公开(公告)号:US6064266A

    公开(公告)日:2000-05-16

    申请号:US153799

    申请日:1998-09-15

    CPC分类号: H02M3/28 H02M1/32 H03G11/00

    摘要: A load limiting circuit (56) and method for limiting the output impedance seen by an amplifier (12), wherein a load limiting impedance (64), preferably a resister (94), is selectively coupled in parallel with the output impedance by a switch circuit (62), when a threshold detect circuit (60) detects the value of the output impedance (48) rising above a predetermined value. The output impedance is preferably measured by monitoring the output current through a resistor (70) connected in series with the output impedance (48).

    摘要翻译: 负载限制电路(56)和用于限制由放大器(12)所看到的输出阻抗的方法,其中负载限制阻抗(64)(优选地电阻器(94))选择性地通过开关与输出阻抗耦合耦合 电路(62),当阈值检测电路(60)检测到输出阻抗(48)的值上升到高于预定值时。 输出阻抗优选通过监视通过与输出阻抗(48)串联连接的电阻器(70)的输出电流来测量。