公开(公告)号：US4525636A

公开(公告)日：1985-06-25

申请号：US413147

申请日：1982-08-30

申请人： Yasuo Kominami ,  Yuichi Ohkubo ,  Kohki Aizawa ,  Satoshi Sasaki

发明人： Yasuo Kominami ,  Yuichi Ohkubo ,  Kohki Aizawa ,  Satoshi Sasaki

IPC分类号： H03G3/10 ,  H03F1/30 ,  H03H11/02 ,  H03H11/46 ,  H03K3/023 ,  H03K17/16

CPC分类号： H03H11/46 ,  H03F1/305

摘要： A variable electronic impedance circuit contains a voltage-current converter having an input terminal which is supplied with an input signal voltage, and a variable-gain current amplifier having an input terminal which is supplied with an output current of the voltage-current converter. The output signal current of the amplifier is fed back to the input terminal of the voltage-current converter.In order to prevent undesirable oscillation immediately after the closure of a power supply switch, the variable electronic impedance circuit includes a control circuit which substantially inhibits the operation of the voltage-current converter for a predetermined time after the closure of the power supply switch.

摘要翻译： 可变电子阻抗电路包括具有输入信号电压的输入端的电压 - 电流转换器和具有输入端的可变增益电流放大器，该输入端被提供有电压 - 电流转换器的输出电流。 放大器的输出信号电流反馈到电压 - 电流转换器的输入端。 为了防止在电源开关闭合后立即产生不期望的振荡，可变电子阻抗电路包括控制电路，其在电源开关闭合之后的预定时间内基本上禁止电压 - 电流转换器的操作。