Optical functional device of an optical waveguide type
    41.
    发明授权
    Optical functional device of an optical waveguide type 失效
    光波导型光功能元件

    公开(公告)号:US4896930A

    公开(公告)日:1990-01-30

    申请号:US158706

    申请日:1988-02-22

    摘要: The present invention relates to an optical functional device of an optical waveguide type, particularly to an optical waveguide type with an organic nonlinear optical material suitable for the use in the fields of optical communication or optical information processing. In other words, the present invention provides an optical functional device having an organic nonlinear optical material as an optical waveguide embedded into the surface of a substrate and being an organic nonlinear optical material charged into a hollow part which is composed of a channel as a slit provided on the surface of said substrate and a further substrate for covering the upper part of the channel.

    摘要翻译: 本发明涉及一种光波导型的光功能器件,特别涉及适合于在光通信或光信息处理领域中使用的有机非线性光学材料的光波导型。 换句话说,本发明提供一种光学功能元件,其具有嵌入到基板的表面的作为光波导的有机非线性光学材料,并且是装入中空部分的有机非线性光学材料,所述中空部分由通道作为狭缝 设置在所述基板的表面上,以及另一基板,用于覆盖通道的上部。

    Two-wire communication system
    44.
    发明授权
    Two-wire communication system 失效
    双线通信系统

    公开(公告)号:US4737787A

    公开(公告)日:1988-04-12

    申请号:US919764

    申请日:1986-10-16

    摘要: A two-wire communication system comprising a transmitting unit having constant current characteristics for controlling an output current thereof on the basis of a signal supplied from a sensor, a receiving unit for receiving a control signal to control the sensor, a load resistor and power supply connected in series with the transmitting unit via a two-wire transmission path, and a communication unit so connected in parallel to the load resistor as to convey the output current of the transmitting unit to the process side and control a current from the power supply transmitted onto the transmission path on the basis of information supplied from the process side. With this configuration, a communication system is provided which makes possible replacing process variable transmitters in a conventional analog control system or installing process variable transmitters in a new analog control system, which makes possible remotely setting and adjusting the transmitter function by the communication unit in the above described system, which makes it possible for the control computer to control as far as terminals, and which facilitates digitization of the system.

    摘要翻译: 一种双线通信系统,包括具有恒定电流特性的发送单元,用于基于从传感器提供的信号来控制其输出电流;接收单元,用于接收控制信号以控制传感器;负载电阻器和电源 通过双线传输路径与发射单元串联连接,以及与负载电阻并联连接的通信单元,以将发送单元的输出电流传送到处理侧,并控制来自发送的电源的电流 基于从处理侧提供的信息到传输路径上。 利用这种配置,提供了一种通信系统,其使得可以在常规模拟控制系统中替换过程变量发射机或在新的模拟控制系统中安装过程变量发射机,这使得可以通过通信单元远程设置和调整发射机功能 上述系统,这使得控制计算机可以控制到终端,并且有助于系统的数字化。

    Constant current source device having a ratio metricity between supply
voltage and output current
    45.
    发明授权
    Constant current source device having a ratio metricity between supply voltage and output current 失效
    恒流源装置具有电源电压和输出电流之间的比率

    公开(公告)号:US4591780A

    公开(公告)日:1986-05-27

    申请号:US559467

    申请日:1983-12-08

    CPC分类号: G05F3/30 G05F3/265

    摘要: A current source device controls a rate of change of current flowing through a load so that the change rate of the current is equal to a change rate of a fluctuating supply voltage. A first transistor is fed with the supply voltage via a first resistor connected to its collector and a second resistor connected to its emitter. A second transistor has a base connected to a base of the first transistor, an emitter connected to a third resistor and a collector connected to a load. A current to the load is fed from the supply voltage via the load, the collector and emitter of the second transistor and the third resistor. The collector and base of the first transistor are respectively connected to a base and an emitter of a third transistor having a collector fed with the supply voltage. The ratio between a voltage drop caused across the second resistor by a reference current flowing through the first resistor, the collector and emitter of the first transistor and the second resistor, and a voltage drop caused across the third resistor by an emitter current of the second transistor, which is substantially equal to a collector current of the second transistor flowing through the load, is set to a predetermined value. The emitter area of the second transistor is enlarged beyond that of the first transistor to obtain a sufficiently large output current.

    摘要翻译: 电流源装置控制流过负载的电流的变化率,使得电流的变化率等于电源电压波动的变化率。 第一晶体管经由连接到其集电极的第一电阻器和连接到其发射极的第二电阻器馈送电源电压。 第二晶体管具有连接到第一晶体管的基极的基极,连接到第三电阻器的发射极和连接到负载的集电极。 通过负载,第二晶体管的集电极和发射极以及第三电阻从供电电压馈送到负载的电流。 第一晶体管的集电极和基极分别连接到具有馈送有电源电压的集电极的第三晶体管的基极和发射极。 通过流过第一电阻器的参考电流,第一晶体管的集电极和发射极以及第二电阻器在第二电阻器之间引起的电压降之间的比率以及由第二电阻器的发射极电流引起的第三电阻器的电压降 基本上等于流过负载的第二晶体管的集电极电流的晶体管被​​设定为预定值。 第二晶体管的发射极面积比第一晶体管的发射极面积增大,以获得足够大的输出电流。