Power amplifier module with stable idling current
    5.
    发明授权
    Power amplifier module with stable idling current 失效
    功率放大器模块具有稳定的怠速电流

    公开(公告)号:US06731171B2

    公开(公告)日:2004-05-04

    申请号:US10080558

    申请日:2002-02-25

    申请人: Kiichi Yamashita

    发明人: Kiichi Yamashita

    IPC分类号: H03G330

    摘要: A power amplifier module includes a bias circuit to produce an idling current and a power amplifier of which the gain is controlled by the idling current produced by the bias circuit. Effects of changes of control voltage and ambient temperature of the power amplifier module can be removed by a first detector in the bias circuit to detect changes of the control voltage and a second detector in the bias circuit to detect changes of the ambient temperature. The bias circuit may further include a differential circuit to make error amplification with the first detector provided to perform as a standard voltage source for ambient temperature detection of the second detector and the second detector provided to perform as a standard voltage source for control-voltage detection of the first detector. Thus, they serve as detection circuits or standard voltage sources mutually.

    摘要翻译: 功率放大器模块包括产生怠速电流的偏置电路和由偏置电路产生的空载电流来控制增益的功率放大器。 功率放大器模块的控制电压和环境温度的变化的影响可以通过偏置电路中的第一检测器去除,以检测控制电压的变化和偏置电路中的第二检测器,以检测环境温度的变化。 偏置电路还可以包括差分电路,以便利用第一检测器进行误差放大,以提供作为用于第二检测器和第二检测器的环境温度检测的标准电压源,所述第二检测器被提供用于执行用于控制电压检测的标准电压源 的第一个检测器。 因此,它们用作检测电路或标准电压源。

    FOAMING METHOD AND APPARATUS THEREFOR
    6.
    发明申请
    FOAMING METHOD AND APPARATUS THEREFOR 有权
    发泡方法及其装置

    公开(公告)号:US20110121470A1

    公开(公告)日:2011-05-26

    申请号:US13013113

    申请日:2011-01-25

    IPC分类号: B01F3/04

    摘要: A gas mixing/supplying device and a method includes of introducing a gas into a high-viscosity material. The method the steps of effecting a first suction stroke in which the piston (25) is moved in the cylinder (27); supplying a high-viscosity material to the cylinder, using a suction force in the cylinder generated in said first suction stroke;stopping the piston after the first suction stroke; effecting a second suction stroke in which the piston is moved in the cylinder after the supply of the high-viscosity material; supplying a gas to the cylinder, using a suction force in the cylinder generated in the second suction stroke;effecting a pressurizing stroke in which the piston is moved in the cylinder after completion of the supply of the gas; and effecting a discharge stroke in which the high-viscosity material and the gas are discharged into a conduit. Then, the high-viscosity material is foamed under atmospheric pressure.

    摘要翻译: 气体混合供给装置和包括将气体导入高粘度材料的方法。 该方法是实现活塞(25)在气缸(27)中移动的第一吸入行程的步骤; 使用在所述第一吸入冲程中产生的所述气缸中的吸力将高粘度材料供应到所述气缸;在所述第一吸入冲程之后停止所述活塞; 在提供高粘度材料之后进行第二吸入行程,其中活塞在气缸中移动; 使用在第二吸入行程中产生的气缸中的吸力将气体供给到气缸;在完成气体供应之后,进行活塞在气缸中移动的加压行程; 并且进行将高粘度物质和气体排出到管道中的排出行程。 然后,高粘度材料在大气压下发泡。