Controllable current source
    1.
    发明授权
    Controllable current source 失效
    可控电流源

    公开(公告)号:US3956645A

    公开(公告)日:1976-05-11

    申请号:US558211

    申请日:1975-03-14

    申请人: Dirk Boer

    发明人: Dirk Boer

    CPC分类号: G06G7/24 G06G7/163 H03G1/00

    摘要: A controllable current source having a high impedance at a control input which for this purpose is connected to a non-fed back input of an operational amplifier present therein, while the amplifier output is fed back to a second amplifier input through a transistor whose collector is connected, possibly through a non-linear resistance network, to the second input which is furthermore connected via a resistor to a supply terminal, the transistor being incorporated in a current mirror circuit including a second transistor supplying the output current at the collector.

    摘要翻译: 在控制输入处具有高阻抗的可控电流源连接到其中存在的运算放大器的非反馈输入端,而放大器输出端通过晶体管反馈到第二放大器输入端,晶体管的集电极为 可能通过非线性电阻网络连接到第二输入,该第二输入还经由电阻器连接到电源端子,该晶体管被并入包括在集电极处提供输出电流的第二晶体管的电流镜电路中。