Piezoelectric actuator
    7.
    发明授权
    Piezoelectric actuator 失效
    压电执行器

    公开(公告)号:US4647808A

    公开(公告)日:1987-03-03

    申请号:US770665

    申请日:1985-08-29

    申请人: Tsuyoshi Shibuya

    发明人: Tsuyoshi Shibuya

    IPC分类号: H01L41/09 H02N2/00 H01L41/08

    CPC分类号: H01L41/09

    摘要: An actuator comprises a piezoelectric element and a mechanical amplifier. Displacement caused by the piezoelectric effect of the piezoelectric element is amplified mechanically by a lever-link system having a lever portion and a fulcrum. The lever-link system comprises multiple steps. The amplified displacement is effectively provided by a transmitting arm for use in a electronic equipment such as printers.

    摘要翻译: 致动器包括压电元件和机械放大器。 由压电元件的压电效应引起的位移由具有杠杆部分和支点的杠杆连杆系统机械地放大。 杠杆链接系统包括多个步骤。 放大位移由用于诸如打印机的电子设备的发送臂有效地提供。

    Mobile communication apparatus and method
    9.
    发明授权
    Mobile communication apparatus and method 失效
    移动通信装置及方法

    公开(公告)号:US5574993A

    公开(公告)日:1996-11-12

    申请号:US308669

    申请日:1994-09-19

    摘要: A mobile communication apparatus is provided, in which the linearity during a small output power of a radio-frequency power amplifier can be maintained as during a large output power. The input signal power to a radio-frequency power amplifier is decreased by an attenuator during a small power output. The resulting downward trend of the transmission signal power is compensated for by increasing the gain of the radio-frequency amplifier circuit through a transmission power control circuit. Under this condition, the radio-frequency power amplifier is made operable in a linear region of the transistor in the same manner as during a large power output. As a result, the linearity of the amplifier is guaranteed over the whole operating range of the transmission power.

    摘要翻译: 提供了一种移动通信装置,其中可以在大输出功率期间保持在射频功率放大器的小输出功率期间的线性度。 在小功率输出期间,通过衰减器降低对射频功率放大器的输入信号功率。 通过通过发送功率控制电路增加射频放大器电路的增益来补偿所产生的发送信号功率的下降趋势。 在这种条件下,射频功率放大器可以在与大功率输出时相同的方式在晶体管的线性区域中可操作。 因此,在发射功率的整个工作范围内保证放大器的线性度。

    Piezoelectric motor
    10.
    发明授权
    Piezoelectric motor 失效
    压电电机

    公开(公告)号:US4777398A

    公开(公告)日:1988-10-11

    申请号:US47675

    申请日:1987-05-08

    申请人: Tsuyoshi Shibuya

    发明人: Tsuyoshi Shibuya

    CPC分类号: H02N2/101 H02N2/023

    摘要: A displacement transmitting apparatus comprising a shaft hole which throttles by piezoelectric effect, and a shaft slidably inserted into the shaft hole engaged with a driving means which advances steppingly by mechanically amplified piezoelectric effect. On-off controlling of electric voltage for the displacement transmitting apparatus and the driving means causes the shaft to advance or conversely causes the driving means to advance where the shaft is fixed.

    摘要翻译: 一种位移传递装置,包括通过压电效应节流的轴孔,以及可滑动地插入到轴孔中的轴,其与通过机械放大的压电效应逐步前进的驱动装置接合。 对位移传动装置和驱动装置的电压进行开 - 关控制使轴推进或相反地使驱动装置在轴被固定的情况下前进。