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    • 2. 发明申请
    • TOTAL ORGANIC CARBON (TOC) FLUID SENSOR
    • 总有机碳(TOC)流体传感器
    • US20120180554A1
    • 2012-07-19
    • US13499217
    • 2010-09-29
    • Richard Edward LeggettVishnu Vardhanan RajasekharanMatthew Grant Collier
    • Richard Edward LeggettVishnu Vardhanan RajasekharanMatthew Grant Collier
    • G01N33/00
    • G01N33/1846G01N27/08
    • A total organic carbon (TOC) fluid sensor (100) is provided according to an embodiment of the invention. The TOC fluid sensor (100) includes a first oxidization cell (101A), a second oxidization cell (101B), a gas permeable membrane (106) configured to allow carbon dioxide to equilibriate between the first oxidization cell (101A) and the second oxidization cell (101B), a first conductivity sensor (136A), and a second conductivity sensor (136B). The TOC fluid sensor (100) oxidizes a fluid portion in the first oxidization cell (101A) to create carbon dioxide, equilibriates the carbon dioxide between the first oxidization cell (101A) and the second oxidization cell (101B), obtains a second cell conductivity information, and determines a TOC quantity in the fluid under test from the second cell conductivity information when the first cell oxidization is substantially complete.
    • 根据本发明的实施例提供总有机碳(TOC)流体传感器(100)。 TOC流体传感器(100)包括第一氧化池(101A),第二氧化池(101B),透气膜(106),其被配置为允许二氧化碳在第一氧化池(101A)和第二氧化池 电池(101B),第一电导率传感器(136A)和第二电导率传感器(136B)。 TOC流体传感器(100)氧化第一氧化池(101A)中的流体部分以产生二氧化碳,使第一氧化池(101A)和第二氧化池(101B)之间的二氧化碳平衡,获得第二电池电导率 信息,并且当第一单元氧化基本上完成时,从第二单元电导率信息确定被测流体中的TOC量。
    • 6. 发明授权
    • Constant current and voltage controller in a four-pin package with dual-use pin
    • 恒定电流和电压控制器采用四引脚封装双用引脚
    • US07522431B2
    • 2009-04-21
    • US11888599
    • 2007-07-31
    • Steven HuynhMatthew GrantDavid KunstZhibo Tao
    • Steven HuynhMatthew GrantDavid KunstZhibo Tao
    • H02M3/335
    • H02M3/33507H02M3/33523H02M2001/0009
    • A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls an inductor switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the pulse width controls the peak of the inductor current.
    • 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流流过的电感开关。 电感电流在斜坡时间内以斜升速率增加,并在斜坡时间结束时停止增加。 比较电路产生一个定时信号,其指示如果电感器电流以升高速率继续增加,则电感器电流将达到预定电流极限的目标时间。 然后,控制环路接收定时信号,并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后,当目标时间发生时,电感开关控制信号的脉冲宽度就会增加。 调整脉冲宽度可以控制电感电流的峰值。
    • 7. 发明申请
    • Secondary side constant voltage and constant current controller
    • 二次侧恒压和恒流控制器
    • US20090016086A1
    • 2009-01-15
    • US11825972
    • 2007-07-09
    • Steven HuynhZhibo TaoDavid J. KunstMatthew Grant
    • Steven HuynhZhibo TaoDavid J. KunstMatthew Grant
    • H02M3/156H02M7/217
    • H02M3/33523
    • A low-cost integrated circuit is used as a secondary side constant voltage and constant current controller. The integrated circuit has four terminals and two amplifier circuits. A first amplifier circuit is used to sense a voltage on a FB terminal and in response to cause a first current to flow through an OPTO terminal. A second amplifier circuit is used to sense a voltage between a SENSE terminal and a SOURCE terminal and in response to cause a second current to flow through the same OPTO terminal. The FB terminal is used for output voltage feedback and is also used to supply power onto the integrated circuit. The SOURCE terminal is used for output current feedback and is also used as power supply return for the integrated circuit. The cost of the integrated circuit is reduced by having only four terminals.
    • 低成本集成电路用作二次侧恒压和恒流控制器。 该集成电路具有四个端子和两个放大器电路。 第一放大器电路用于感测FB端子上的电压,并且响应于使第一电流流过OPTO端子。 第二放大器电路用于感测SENSE端子和SOURCE端子之间的电压,并且响应于使第二电流流过相同的OPTO端子。 FB端子用于输出电压反馈,也可用于向集成电路供电。 SOURCE端子用于输出电流反馈,也可用作集成电路的电源返回。 仅通过四个端子来降低集成电路的成本。
    • 8. 发明申请
    • Compensating for base current in a primary side power converter that uses an NPN bipolar transistor
    • 在使用NPN双极晶体管的初级侧功率转换器中补偿基极电流
    • US20080259652A1
    • 2008-10-23
    • US11893231
    • 2007-08-14
    • Steven HuynhMatthew GrantDavid KunstZhibo Tao
    • Steven HuynhMatthew GrantDavid KunstZhibo Tao
    • H02M7/00
    • H02M3/33507H02M3/33523H02M2001/0009
    • A comparing circuit and a control loop are used to maintain the peak level of current flowing through an inductor of a flyback converter. An inductor switch control signal controls a switch through which the inductor current flows. The inductor current increases at a ramp-up rate during a ramp time and stops increasing at the end of the ramp time. The comparing circuit generates a timing signal that indicates a target time at which the inductor current would reach a predetermined current limit if the inductor current continued to increase at the ramp-up rate. The control loop then receives the timing signal and compares the target time to the end of the ramp time. The pulse width of the inductor switch control signal is increased when the target time occurs after the end of the ramp time. Adjusting the frequency and pulse width controls the peak of the inductor current.
    • 使用比较电路和控制回路来保持流过反激式转换器的电感器的电流的峰值电平。 电感开关控制信号控制电感电流通过的开关。 电感电流在斜坡时间内以斜升速率增加,并在斜坡时间结束时停止增加。 比较电路产生一个定时信号,其指示如果电感器电流以升高速率继续增加,则电感器电流将达到预定电流极限的目标时间。 然后,控制环路接收定时信号,并将目标时间与斜坡时间结束进行比较。 当斜坡时间结束后,当目标时间发生时,电感开关控制信号的脉冲宽度就会增加。 调整频率和脉冲宽度可以控制电感电流的峰值。
    • 10. 发明授权
    • Connector
    • 连接器
    • US06500015B2
    • 2002-12-31
    • US09949674
    • 2001-09-12
    • Makoto FukamachiMatthew Grant
    • Makoto FukamachiMatthew Grant
    • H01R1362
    • H01R13/62905
    • The invention provides a means of reducing the force required for fitting a lever connector. A connector 20 is divided into partitioned housings 22L and 22R. The timing of the fitting operation differs for each of the partitioned housings 22L and 22R, thereby causing the time at which peak fitting resistance occurs to differ. The peak fitting resistance being dispersed over the period between the beginning and the ending of the fitting operations of the two partitioned housings 22L and 22R. As a result, the overall peak value of the fitting resistance (the force required for the fitting operation) is reduced for the connector as a whole.
    • 本发明提供了一种减少安装杠杆连接器所需的力的方法。 连接器20被分割成分隔的壳体22L和22R。 对于每个分隔的壳体22L和22R,装配操作的时机不同,从而导致发生峰值拟合电阻的时间不同。 峰值匹配电阻分散在两个分隔的壳体22L和22R的装配操作的开始和结束之间的期间。 结果,对于连接器整体而言,装配电阻的总峰值(装配操作所需的力)减小。