Gate biasing arrangement to temperature compensate a quiescent current of a power transistor
    5.
    发明授权
    Gate biasing arrangement to temperature compensate a quiescent current of a power transistor 有权
    栅极偏置布置,用于温度补偿功率晶体管的静态电流

    公开(公告)号:US06288596B1

    公开(公告)日:2001-09-11

    申请号:US09489947

    申请日:2000-01-24

    CPC classification number: H03F1/301 H03F2200/18

    Abstract: To eliminate the temperature dependency of the quiescent current of a power transistor (1), the gate bias voltage of the power transistor (1) is controlled by means of the output voltage of a biasing transistor (3) residing on the same silicon chip as the power transistor (1), and by interconnecting the gate (G3) and drain (D3) of the biasing transistor (3) and feeding it with a constant current (IB) from external circuitry.

    Abstract translation: 为了消除功率晶体管(1)的静态电流的温度依赖性,功率晶体管(1)的栅极偏置电压通过位于相同硅芯片上的偏置晶体管(3)的输出电压来控制, 功率晶体管(1),并且通过互连偏置晶体管(3)的栅极(G3)和漏极(D3)并且从外部电路向其馈送恒定电流(IB)。

    Stereotactic apparatus
    6.
    发明授权
    Stereotactic apparatus 有权
    立体设备

    公开(公告)号:US06283977B1

    公开(公告)日:2001-09-04

    申请号:US09458700

    申请日:1999-12-13

    CPC classification number: A61B90/10 A61B90/11

    Abstract: A stereotactic apparatus including a support slide for being slidably mounted to an arc, a microdrive unit having an instrument holder for depth adjustment of an instrument along a depth axis, in an essentially arc parallel plane, an arc perpendicular adjusting mechanism for adjustment of the microdrive unit along an arc perpendicular axis, an arc parallel adjusting mechanism for adjustment of the microdrive unit along an arc parallel axis, wherein the arc perpendicular adjusting mechanism includes an arc perpendicular slide, which is movably mounted to the support slide. The arc parallel adjusting mechanism is mounted at an end of the arc perpendicular slide, so that by movement of the arc perpendicular slide in a direction along the arc perpendicular axis the arc parallel adjusting mechanism also moves in that direction. An arc parallel slide is movably mounted to the arc parallel adjusting mechanism, the arc parallel slide being positioned at a different level with respect to the arc perpendicular slide, and the microdrive unit is rigidly mounted with its top portion to the arc parallel slide, and by movement of the arc parallel slide in the arc parallel direction the microdrive unit also moves in the arc parallel direction.

    Abstract translation: 一种立体定向装置,包括用于可滑动地安装到弧的支撑滑块,具有用于沿着深度轴深度调节仪器的仪器保持器的微型驱动单元,在基本上平行的平面中,用于调节微驱动的电弧垂直调节机构 沿弧线垂直轴线的单元,用于沿弧形平行轴调节微型驱动单元的弧形平行调节机构,其中弧形垂直调节机构包括弧形垂直滑动件,其可移动地安装到支撑滑块。 圆弧平行调节机构安装在弧形垂直滑动件的端部,通过圆弧垂直滑动沿着弧线垂直轴的方向运动,弧形平行调节机构也沿该方向移动。 圆弧平行滑动件可移动地安装在弧形平行调节机构上,弧形平行滑动件相对于圆弧垂直滑块位于不同的高度,微型驱动单元刚性地安装在弧形平行滑块上, 通过圆弧平行滑动件沿弧线平行方向移动,微驱动单元也沿圆弧平行方向移动。

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