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    • 13. 发明公开
    • An ECL to CMOS signal converter circuit including toggle-fault detection
    • ECL到CMOS信号转换器电路,包括触发故障检测
    • EP0664615A2
    • 1995-07-26
    • EP95100679.0
    • 1995-01-19
    • ALCATEL N.V.
    • Ruegg, Eugen H.
    • H03K19/003H03K19/0175H03K5/007H04L25/02H04L1/24
    • H03K19/003H03K19/017509
    • An ECL to CMOS signal converter circuit including built-in toggle-fault detection circuitry and method of conversion are provided in which an RF transformer (420) is used to translate ECL level digital signals to CMOS level signals. A diode biasing circuit (CR₁,CR₂) shifts the average DC level of the CMOS level signals in a positive direction to avoid signal undershoot. An AC peak detection circuit is connected to the inactive leg (A) of the RF transformer (420) to monitor toggling of the ECL level input signal lines. A DC comparator circuit (430) compares the detected peak voltage with a predetermined threshold voltage, and generates an alarm signal representing a toggle-fault whenever the detected peak voltage is lower than the predetermined threshold.
    • 提供了包括内置触发故障检测电路和转换方法的ECL到CMOS信号转换器电路,其中使用RF变压器(420)将ECL电平数字信号转换成CMOS电平信号。 二极管偏置电路(CR 1,CR 2)将CMOS电平信号的平均DC电平沿正方向移动以避免信号下冲。 AC峰值检测电路连接到RF变压器(420)的无源臂(A)以监视ECL电平输入信号线的切换。 DC比较器电路(430)将检测到的峰值电压与预定阈值电压进行比较,并且无论何时检测到的峰值电压低于预定阈值,都生成表示触发故障的警报信号。
    • 20. 发明公开
    • CONSTANT-VOLTAGE GENERATING APPARATUS AND MEASURING APPARATUS
    • 恒定电压发生装置和测量装置
    • EP3322094A1
    • 2018-05-16
    • EP17192928.4
    • 2017-09-25
    • Fuji Electric Co., Ltd.
    • YOSHIMURA, Hiroyuki
    • H03K19/003
    • G05F1/575G05F1/468H03K19/003
    • A constant-voltage generating apparatus including a plurality of constant-voltage circuits connected in series is provided. Each of the constant-voltage circuits has a positive-side power supply node, a negative-side power supply node, and a control unit that controls voltage between the positive-side power supply node and the negative-side power supply node to be constant voltage. The positive-side power supply node in the constant-voltage circuit at a preceding stage is connected to the negative-side power supply node in the constant-voltage circuit at a subsequent stage. The constant-voltage generating apparatus may further include a constant-current circuit that regulates power-supply currents flowing through the plurality of constant-voltage circuits to be constant.
    • 提供了包括串联连接的多个恒压电路的恒压产生装置。 每个恒压电路具有正侧电源节点,负侧电源节点以及控制单元,该控制单元将正侧电源节点和负侧电源节点之间的电压控制为恒定 电压。 前级恒压电路中的正侧电源节点连接到后级的恒压电路中的负侧电源节点。 恒压产生装置还可以包括恒流电路,该恒流电路将流过多个恒压电路的电源电流调节为恒定。