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    • 3. 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。
    • 6. 发明申请
    • Cooling Methods and Apparatus
    • 冷却方法与装置
    • US20080112128A1
    • 2008-05-15
    • US11663493
    • 2005-09-22
    • Michael James Holland
    • Michael James Holland
    • H05K5/00F25B1/00
    • H05K7/20818F24F1/01F24F2221/14F25B9/008F25B25/005F25B2309/06
    • Computer cooling equipment for computer equipment comprises: a primary heat transfer circuit; a secondary heat transfer circuit containing a secondary heat transfer fluid, a secondary condenser cooled by the primary heat transfer circuit and a secondary evaporator for cooling the computer equipment; and is characterised in that the secondary heat transfer fluid is a volatile fluid. The secondary heat transfer fluid may be carbon dioxide. The cooling system is of particular use in power hungry applications such as cooling of computer servers, particularly of blade servers as it can produce a heat load dissipation of up to 100 kW, compared to 10 kW or less using conventional systems. Heat exchange cabinets, air conditioning systems and building elements using a secondary heat transfer fluid which is a volatile fluid are also disclosed.
    • 计算机设备的计算机冷却设备包括:一次传热电路; 包含二次传热流体的二次传热回路,由一次传热回路冷却的二次冷凝器和用于冷却该计算机设备的二次蒸发器; 其特征在于,二次传热流体是挥发性流体。 二次传热流体可以是二氧化碳。 冷却系统在电力饥饿应用中特别有用,例如计算机服务器的冷却,特别是对于刀片服务器的冷却,因为它可以产生高达100kW的热负荷消耗,而与常规系统相比为10kW以下。 还公开了使用作为挥发性流体的二次传热流体的热交换柜,空调系统和建筑元件。
    • 10. 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。