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    • 2. 发明授权
    • AC voltage measurement circuit
    • 交流电压测量电路
    • US08493056B2
    • 2013-07-23
    • US13106720
    • 2011-05-12
    • Iain BarnettWilliam Michael James HollandJonathan Ephraim David Hurwitz
    • Iain BarnettWilliam Michael James HollandJonathan Ephraim David Hurwitz
    • G01R19/00
    • H05K1/162G01R15/06G01R15/16G01R19/12G01R19/175H03H7/004H05K1/0239H05K1/0256H05K2201/09309H05K2201/09972
    • A voltage measurement circuit is operative to measure a high voltage AC signal and includes a capacitive divider circuit and a compensator circuit. The capacitive divider circuit includes first and second inputs, across which, in use, is received a high voltage AC signal and also includes second and third capacitors. First and second plates of each of the first, second and third capacitors are defined by conductive layers of a printed circuit board and the dielectric of each of the first, second and third capacitors being defined by a non-conducting part of the printed circuit board. A compensator circuit has a configurable transfer function and includes an input connected across the first and second plates of the third capacitor and an output. The compensator circuit is operative to change a voltage received at its input in accordance with the transfer function and to provide the changed voltage at its output.
    • 电压测量电路用于测量高压AC信号,并包括电容分压器电路和补偿电路。 电容分压器电路包括第一和第二输入,在使用中,它们被接收高压AC信号,并且还包括第二和第三电容器。 第一,第二和第三电容器中的每一个的第一和第二板由印刷电路板的导电层限定,并且第一,第二和第三电容器中的每一个的电介质由印刷电路板的非导电部分限定 。 补偿电路具有可配置的传递函数,并且包括连接在第三电容器的第一和第二板上的输入端和输出端。 补偿电路可操作以根据传递函数改变其输入处接收的电压,并在其输出端提供改变的电压。
    • 6. 发明申请
    • Electrical isolators
    • 电气隔离器
    • US20120175504A1
    • 2012-07-12
    • US13498076
    • 2010-09-23
    • William Michael James HollandJonathan Ephraim David HurwitzIain Barnett
    • William Michael James HollandJonathan Ephraim David HurwitzIain Barnett
    • H03F3/08H01L31/16
    • H04B10/802H03K17/78
    • The invention discloses an electrical isolator circuit comprising: an input stage comprising a transmitter of an opto-isolator; and an output stage comprising: a receiver of the opto-isolator; an active circuit in series with the receiver between the receiver and a power rail of the output stage; a first resistor connected to an output of the active circuit, and an input for the application of a predetermined voltage to the active circuit, the output stage being configured such that a varying output voltage is developed across the first resistor in response to input of a high voltage AC signal to the input stage. Ideally the output stage is operable to clamp the voltage across the receiver at the level of the predetermined voltage, thereby allowing for an increase in the load resistor and variable output resistor without increasing the time constant to unacceptably having regards to switching requirements.
    • 本发明公开了一种电气隔离器电路,包括:输入级,包括光隔离器的发射器; 以及输出级,包括:所述光隔离器的接收器; 与接收器和输出级的电源轨之间的接收器串联的有源电路; 连接到有源电路的输出的第一电阻器和用于向有源电路施加预定电压的输入端,所述输出级被配置为使得响应于输入端的输入,跨第一电阻器产生变化的输出电压 高压交流信号到输入级。 理想地,输出级可操作以在预定电压的水平上钳位接收器两端的电压,从而允许增加负载电阻器和可变输出电阻器,而不会在不考虑开关要求的情况下增加时间常数。
    • 7. 发明授权
    • Electrical isolator circuit
    • 隔离电路
    • US08866113B2
    • 2014-10-21
    • US13498076
    • 2010-09-23
    • William Michael James HollandJonathan Ephraim David HurwitzIain Barnett
    • William Michael James HollandJonathan Ephraim David HurwitzIain Barnett
    • G02B27/00H04B10/80H03K17/78
    • H04B10/802H03K17/78
    • The invention discloses an electrical isolator circuit comprising: an input stage comprising a transmitter of an opto-isolator; and an output stage comprising: a receiver of the opto-isolator; an active circuit in series with the receiver between the receiver and a power rail of the output stage; a first resistor connected to an output of the active circuit, and an input for the application of a predetermined voltage to the active circuit, the output stage being configured such that a varying output voltage is developed across the first resistor in response to input of a high voltage AC signal to the input stage. Ideally the output stage is operable to clamp the voltage across the receiver at the level of the predetermined voltage, thereby allowing for an increase in the load resistor and variable output resistor without increasing the time constant to unacceptably having regards to switching requirements.
    • 本发明公开了一种电气隔离器电路,包括:输入级,包括光隔离器的发射器; 以及输出级,包括:所述光隔离器的接收器; 与接收器和输出级的电源轨之间的接收器串联的有源电路; 连接到有源电路的输出的第一电阻器和用于向有源电路施加预定电压的输入端,所述输出级被配置为使得响应于输入端的输入,跨第一电阻器产生变化的输出电压 高压交流信号到输入级。 理想地,输出级可操作以在预定电压的水平上钳位接收器两端的电压,从而允许增加负载电阻器和可变输出电阻器,而不会在不考虑开关要求的情况下增加时间常数。