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    • 5. 发明授权
    • Voltage inverter device
    • 电压变频器
    • US4513362A
    • 1985-04-23
    • US488811
    • 1983-04-26
    • Yukio Aizawa
    • Yukio Aizawa
    • H02M7/48H02M7/217
    • H02M7/53873H02M7/48
    • A voltage inverter device has a ROM which stores digital values in advance. The digital value is proportional to a voltage-time integration value of an AC output voltage waveform which corresponds to each of a plurality of basic electrical angle intervals. The digital values stored in the ROM are sequentially read out to be compared with time data supplied by a time counter. Comparison results correspond to specific electrical angles of the AC output voltage waveform. The results are combined by a logical circuit so as to obtain a control signal for generating an AC output voltage of desired waveform.
    • 电压逆变器装置具有预先存储数字值的ROM。 数字值与对应于多个基本电角度间隔中的每一个的AC输出电压波形的电压 - 时间积分值成比例。 存储在ROM中的数字值被顺序地读出来与时间计数器提供的时间数据进行比较。 比较结果对应于交流输出电压波形的特定电角度。 结果由逻辑电路组合,以获得用于产生所需波形的AC输出电压的控制信号。
    • 7. 发明申请
    • NETWORK RELAY DEVICE
    • 网路继电器
    • US20120197561A1
    • 2012-08-02
    • US13343914
    • 2012-01-05
    • Yukio Aizawa
    • Yukio Aizawa
    • G01R21/00G06F19/00
    • H04M19/08H04L12/10Y02D70/122
    • A network relay device includes a main functional portion including a relaying function for network communication, a power supply portion for converting an AC current taken from an external AC power supply to a DC current, and providing the DC current to the main functional portion, a measuring unit for measuring a value of the DC current, after the conversion to the DC current provided from the power supply portion to the main functional portion, and a computing unit for computing a total power consumption of a whole including the main functional portion and the power supply portion, based on a result measured by the measuring unit.
    • 网络中继装置包括:包括用于网络通信的中继功能的主要功能部分,用于将从外部AC电源获取的AC电流转换为DC电流的电源部分,以及将DC电流提供给主要功能部分; 测量单元,用于在转换成从电源部分提供给主功能部分的DC电流之后测量直流电流的值;以及计算单元,用于计算包括主功能部分和主功能部分的整体的总功耗 电源部分,基于由测量单元测量的结果。
    • 8. 发明授权
    • Automatic power control circuit
    • 自动电源控制电路
    • US5724170A
    • 1998-03-03
    • US573147
    • 1995-12-15
    • Yukio Aizawa
    • Yukio Aizawa
    • H01S5/00H01S5/042H01S5/068H04B10/04
    • H04B10/502H04B10/564
    • A control circuit of a light-emitting device comprises a negative-feedback loop including a photodetector and a sample and hold circuit. The photodetector monitors an optical signal emitted by the light-emitting device and the sample and hold circuit generates a control signal supplied to a light-emitting device driver. The sample and hold circuit performs the sampling of a monitored signal each time the light-emitting device emits light and holds the sampled monitored signal. The voltage held in the sample and hold circuit is output as the control signal the light-emitting device driver. The light-emitting device driver drives the light-emitting device to switch on and off according to the input digital data with the output light intensity of the light-emitting device controlled by the control signal so as to be kept at a constant level.
    • 发光装置的控制电路包括负反馈回路,其包括光电检测器和采样保持电路。 光检测器监视由发光装置发出的光信号,采样和保持电路产生提供给发光装置驱动器的控制信号。 每次发光装置发光时,采样和保持电路对监视信号进行采样,并保持采样的监视信号。 保持在采样保持电路中的电压作为发光装置驱动器的控制信号输出。 发光装置驱动器根据输入的数字数据驱动发光装置的接通和断开,发光装置的输出光强度由控制信号控制,以便保持在恒定的水平。
    • 10. 发明授权
    • Differential transmission driver circuit
    • 差分传动驱动电路
    • US06337586B2
    • 2002-01-08
    • US09801062
    • 2001-03-08
    • Yukio Aizawa
    • Yukio Aizawa
    • H03B100
    • H04L25/0272H03K19/01812H04L25/028
    • A driver circuit is provided, which has output characteristics capable of satisfying the DC and AC LVDS standards even if the power source and temperature fluctuate, has LVDS output characteristics, can reduce the number of outside components, and allows a dense package mounting. This driver circuit is constituted by connecting four NPN bipolar-type transistors and three resistors; four input signals are respectively input into base portions of these four NPN bipolar-type transistors; the first input signal and the second input signal have the same DC and AC levels but their phases are reversed, the third input signal and the fourth input signal have the same DC and AC levels but their phases are reversed; and the first input signal and the fourth input signal have the same phase, and the second input signal and the third input signal have the same phase.
    • 即使电源和温度波动,具有LVDS输出特性,也可以减少外部元件的数量,并允许密集的封装安装,具有能够满足直流和交流LVDS标准的输出特性的驱动电路。 该驱动电路由连接四个NPN双极型晶体管和三个电阻构成; 四个输入信号分别输入这四个NPN双极型晶体管的基极部分; 第一输入信号和第二输入信号具有相同的DC和AC电平,但它们的相位相反,第三输入信号和第四输入信号具有相同的DC和AC电平,但它们的相位相反; 并且第一输入信号和第四输入信号具有相同的相位,并且第二输入信号和第三输入信号具有相同的相位。