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    • 6. 发明授权
    • Circuit for regulating the torque of ratio meters
    • 用于调节比率计扭矩的电路
    • US4658211A
    • 1987-04-14
    • US675584
    • 1984-11-28
    • Werner Wallrafen
    • Werner Wallrafen
    • G01R7/04G01R7/00H03K5/08
    • G01R7/04
    • In order to maintain the torque of the ratio meter and the drive of amplifiers feeding it independently of the amplitudes of a sine signal voltage and a cosine signal voltage, a regulation is provided. The regulation makes use of two-quadrant voltage-controlled sources of current each of which is connected to a coil branch. Control voltage amplifiers, one connected in front of each source of current, are furthermore used. A sum-current resistor is provided to form the sum of the supply currents of two voltage-controlled sources of current. The supply currents represent the amounts of the sine signal voltage and cosine signal voltage which act on the voltage amplifiers. From the resistor for the formation of the sum of the supply currents a signal is derived which switches the amplification of the voltage amplifiers automatically in the direction of compensation.
    • 为了保持比率计的转矩和放大器的放大器的驱动独立于正弦信号电压和余弦信号电压的幅度,提供了一个调节。 该调节使用两象限电压源的电流,每个电流源连接到线圈分支。 此外还使用控制电压放大器,一个连接在每个电流源前面。 提供总和电阻以形成两个电压控制的电流源的电源电流之和。 电源电流表示作用在电压放大器上的正弦信号电压和余弦信号电压的量。 从用于形成电源电流之和的电阻器中导出信号,该信号自动地在补偿的方向上切换电压放大器的放大。
    • 9. 发明授权
    • D.C. voltage ratio measuring circuit
    • 直流电压比测量电路
    • US3952248A
    • 1976-04-20
    • US509960
    • 1974-09-27
    • Claude Hannigsberg
    • Claude Hannigsberg
    • G01R27/12G06G7/163H03K5/24G01R7/04G06G7/16
    • H03K5/24G01R27/12G06G7/163
    • A circuit sensitive to the ratio of the values of two voltages of fixed polarities and possibly variable magnitudes, including two identical voltage dividers respectively fed from one and the other of said voltages and a third divider fed from a constant amplitude alternative voltage source. Each divider consists of a constant resistance and of a variable voltage sensitive resistance. The relative positions of the constant and variable resistances are the same in the two first dividers and are reversed in the third one; the latter is biassed by a voltage derived from at least one of the voltages to be compared. From the voltages received at the mid-points of the two first dividers, a resulting voltage is derived, the value of which has a simple relation to the ratio of the compared voltages.
    • 一个电路对固定极性的两个电压和可能的变化幅度的值的比率敏感,该电压包括分别从所述电压中的一个和另一个馈送的两个相同的分压器和从恒定幅度的替代电压源馈送的第三分压器。 每个分频器由恒定电阻和可变电压敏感电阻组成。 常数和可变电阻的相对位置在两个第一分频器中相同,在第三个分频器中相反。 后者被来自待比较的至少一个电压的电压偏置。 从两个第一分频器的中点处接收的电压,导出所得到的电压,其值与比较的电压的比率具有简单的关系。