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1. 发明授权

US5691889A Controller having feed-forward and synchronization features 失效
标题翻译：控制器具有前馈和同步功能
公开(公告)号：US5691889A
公开(公告)日：1997-11-25
申请号：US572171
申请日：1995-12-13
申请人： John P. Bazinet , John A. O'Connor , John H. Ziegler
发明人： John P. Bazinet , John A. O'Connor , John H. Ziegler
IPC分类号： H02M3/156 , H02M3/28 , H02M7/155
CPC分类号： H02M3/156 , H02M3/285 , H02M2001/0006 , H02M2001/0022 , H02M2001/009 , H02M2003/1555
摘要： An integrated circuit controller for a switching power converter implementing feed-forward and synchronization features. The controller IC has pins which permit dual functionality. The feed-forward feature is implemented with a supply voltage from an unregulated auxiliary winding which additionally powers the controller. The synchronization feature is implemented by coupling an external synchronization signal to a feedback pin of the controller IC to which a feedback signal from the output of the converter is also coupled.
摘要翻译：一种用于实现前馈和同步特征的开关电源转换器的集成电路控制器。控制器IC具有允许双重功能的引脚。前馈功能使用来自未调节的辅助绕组的电源电压来实现，该辅助绕组另外为控制器供电。通过将外部同步信号耦合到控制器IC的反馈引脚，来自转换器的输出的反馈信号也耦合到该反馈引脚来实现同步特征。

2. 发明授权

US5627460A DC/DC converter having a bootstrapped high side driver 失效
标题翻译：具有自举高边驱动器的DC / DC转换器
公开(公告)号：US5627460A
公开(公告)日：1997-05-06
申请号：US365349
申请日：1994-12-28
申请人： John P. Bazinet , John A. O'Connor
发明人： John P. Bazinet , John A. O'Connor
IPC分类号： G05F1/618 , H02M3/158 , H02M3/335
CPC分类号： H02M3/33561 , G05F1/618 , H02M3/1588 , H02M2001/0006 , Y02B70/1466
摘要： A synchronous step-down DC to DC converter includes a bootstrap capacitor monitored by a controller for maintaining a desired bootstrap voltage to drive a high side NMOS switch. The controller temporarily increases the duty cycle of the low side NMOS switch when the bootstrap voltage decreases below a predetermined level to maintain a minimum level of charge on the bootstrap capacitor.
摘要翻译：同步降压DC-DC转换器包括由控制器监控的自举电容器，用于维持期望的自举电压以驱动高侧NMOS开关。当自举电压降低到预定电平以下时，控制器暂时增加低侧NMOS开关的占空比，以保持自举电容器上的最小电荷电平。

3. 发明授权

US5422562A Switching regulator with improved Dynamic response 失效
标题翻译：开关稳压器具有改进的动态响应
公开(公告)号：US5422562A
公开(公告)日：1995-06-06
申请号：US183720
申请日：1994-01-19
申请人： Robert A. Mammano , John A. O'Connor
发明人： Robert A. Mammano , John A. O'Connor
IPC分类号： G05F1/44 , H02J1/10 , H02M3/156 , G05F1/56
CPC分类号： G05F1/44 , H02J1/10 , H02M3/156 , H02M2001/0045
摘要： A switching regulator having improved dynamic response to load variations includes a load compensation circuit coupled to the output terminal. The load compensation circuit supplies current to a load coupled to the output terminal when the output voltage is less than a first predetermined level and/or diverts current away from the load when the output voltage is greater than a second predetermined level. The load compensation circuit operates in this manner until the output voltage is between the first and second predetermined levels. The load compensation circuit responds faster to load variations than the switching regulator to accommodate sudden changes in the load demand.
摘要翻译：具有改善的对负载变化的动态响应的开关调节器包括耦合到输出端子的负载补偿电路。当输出电压小于第一预定电平时，负载补偿电路向耦合到输出端子的负载提供电流，并且当输出电压大于第二预定电平时，将电流转移离开负载。负载补偿电路以这种方式工作，直到输出电压在第一和第二预定电平之间。负载补偿电路响应负载变化比开关稳压器更快，以适应负载需求的突然变化。

4. 发明授权

US4360064A Circulating valve for wells 失效
标题翻译：井的循环阀
公开(公告)号：US4360064A
公开(公告)日：1982-11-23
申请号：US206220
申请日：1980-11-12
申请人： John A. O'Connor, III , Warren E. Holland , James D. Burley , Ronald D. Rogers , Fred E. Watkins , Ben D. Terral
发明人： John A. O'Connor, III , Warren E. Holland , James D. Burley , Ronald D. Rogers , Fred E. Watkins , Ben D. Terral
IPC分类号： E21B34/06 , E21B34/10 , E21B43/12 , E21B34/08
CPC分类号： E21B34/10 , E21B21/103
摘要： A circulating (kill) valve for hot, high pressure wells includes a valve assembly to be positioned in an open-ended tubular-shaped side-pocket housing of a mandrel connected into a well tubing string. The valve assembly includes an open-ended cylindrical valve body provided with an interior sealing seat and spaced-apart side openings. A valve element is arranged within the valve body and is urged by unbalanced pressures to the open or closed position depending on the direction of the pressure imbalance. In the closed position a sealing surface on the exterior of the valve element engages and seals with the lower interior sealing seat of the valve body. A ported access to the inner well string pressure permits that pressure to urge the valve element to the closed position. Such pressure may be overcome by pressure imbalance when fluid pressure exterior of the tubing string forces the valve element upwardly from its seat. A wiper seal is arranged on the interior of the valve body and engages the outer surface of the valve element. A ported access to inner tube pressure urges the valve element to the closed position which may be overcome by pressure imbalance when exterior pressure forces the valve element from its seat.
摘要翻译：用于热的高压井的循环（杀死）阀包括阀组件，其被定位在连接到井管柱中的心轴的开口管状侧袋壳体中。阀组件包括一个开口的圆柱形阀体，它设有内部密封座和间隔开的侧面开口。阀元件设置在阀体内，并根据压力不平衡的方向被不平衡的压力推到打开或关闭位置。在关闭位置，阀元件的外部上的密封表面与阀体的下部内部密封座接合并密封。通过进入内部井筒压力的方式允许压力将阀元件推到关闭位置。当管柱外部的流体压力迫使阀元件从其座位向上时，压力不平衡可以克服这种压力。在阀体的内部布置有擦拭器密封件，并与阀元件的外表面接合。对内管压力的移动通道促使阀元件处于关闭位置，当外部压力迫使阀元件从其座位时，该位置可能被压力不平衡所克服。

5. 发明授权

US5847942A Controller for isolated boost converter with improved detection of RMS input voltage for distortion reduction and having load-dependent overlap conduction delay of shunt MOSFET 失效
标题翻译：用于隔离升压转换器的控制器，具有改进的RMS输入电压检测，用于失真减少，并具有负载依赖的并联MOSFET重叠导通延迟
公开(公告)号：US5847942A
公开(公告)日：1998-12-08
申请号：US865023
申请日：1997-05-29
申请人： John P. Bazinet , John A. O'Connor , Dhaval B Dalal
发明人： John P. Bazinet , John A. O'Connor , Dhaval B Dalal
IPC分类号： H02M1/00 , H02M1/42 , H02M3/335
CPC分类号： H02M1/4258 , Y02B70/126
摘要： A power factor correction controller is disclosed which extracts RMS information from a rectified AC input line voltage signal using a sample and hold analog to digital conversion approach. The controller then processes a digital word representing the RMS information through the application of a programmable mathematical function. The result is converted to analog form and provided as an input to an analog multiplier. The controller also monitors the output load power of an isolated boost converter circuit and linearly reduces the overlap delay time of a MOSFET transition switch when the load power decreases.
摘要翻译：公开了一种功率因数校正控制器，其使用采样和保持模数转换方法从整流的AC输入线电压信号中提取RMS信息。然后，控制器通过应用可编程数学函数处理表示RMS信息的数字字。结果转换为模拟形式，并作为模拟乘法器的输入提供。当负载功率降低时，控制器还监视隔离升压转换器电路的输出负载功率，并线性地减小MOSFET转换开关的重叠延迟时间。

6. 发明授权

US5793596A Floating positive circuit breaker 失效
标题翻译：浮动正断路器
公开(公告)号：US5793596A
公开(公告)日：1998-08-11
申请号：US719660
申请日：1996-09-25
申请人： Mark G. Jordan , John A. O'Connor , James R. Garrett
发明人： Mark G. Jordan , John A. O'Connor , James R. Garrett
IPC分类号： H02H3/02 , H02H3/06 , H02H3/087 , H02H3/18 , H03K17/06 , H03K17/082 , H02H3/00
CPC分类号： H03K17/0822 , H02H3/025 , H02H3/06 , H02H3/087 , H02H3/18 , H03K17/063
摘要： A circuit breaker IC adapted for controlling an external NMOS switch coupled between a supply voltage and a load referenced to ground, with the circuit breaker being isolated from ground. With this arrangement, the voltage across the circuit breaker is limited, thereby permitting use of a low voltage integrated circuit fabrication process. The circuit breaker includes a sensor for sensing load current through the switch and providing an output signal indicative of the load current, a charge pump providing a supply voltage and an amplifier responsive to the sensor output signal and to the charge pump supply voltage for providing a drive signal to control the switch.
摘要翻译：一种断路器IC，其适于控制耦合在电源电压和参考地面的负载之间的外部NMOS开关，断路器与地隔离。通过这种布置，断路器两端的电压受到限制，从而允许使用低压集成电路制造工艺。断路器包括用于感测通过开关的负载电流并提供指示负载电流的输出信号的传感器，提供电源电压的电荷泵和响应于传感器输出信号的放大器和用于提供电压的电荷泵电源电压驱动信号来控制开关。

7. 发明授权

US5652501A Voltage sensor for detecting cell voltages 失效
标题翻译：用于检测电池电压的电压传感器
公开(公告)号：US5652501A
公开(公告)日：1997-07-29
申请号：US353620
申请日：1994-12-12
申请人： Winthrop H. McClure , John A. O'Connor , Robert A. Mammano
发明人： Winthrop H. McClure , John A. O'Connor , Robert A. Mammano
IPC分类号： H02J7/00 , G01N27/416
CPC分类号： H02J7/0019 , Y10S320/21
摘要： A battery charger/monitor circuit for charging and/or monitoring a plurality of series-connected cells, including a voltage sensor for sensing the voltage across each of the cells to provide a high cell voltage signal proportional to the highest voltage across any of the cells and a low cell voltage signal proportional to the lowest voltage across any of the cells. The circuit is operable in a monitor mode or a charge mode. In the monitor mode, the cells are disconnected from a load if the low cell voltage signal decreases to a first predetermined level. The circuit includes a controller which provides a control signal in response to the high cell voltage signal, the low cell voltage signal and a current sense signal, for controlling the charging of the cells. In the charge mode, the cells receive a constant charge current until the high cell voltage signal reaches a second predetermined level, after which the voltage across the cell charged to the highest voltage is held substantially constant, causing the charge current to be reduced.
摘要翻译：一种用于对多个串联连接的电池进行充电和/或监视的电池充电器/监视器电路，包括用于感测每个电池两端的电压的电压传感器，以提供与跨越任何电池的最高电压成比例的高电池电压信号以及与跨任何电池的最低电压成比例的低电池电压信号。电路在监视模式或充电模式下可操作。在监视器模式下，如果低电池电压信号降低到第一预定电平，则电池与负载断开。该电路包括控制器，该控制器响应于高电池电压信号，低电池电压信号和电流检测信号提供控制信号，用于控制电池的充电。在充电模式中，电池单元接收恒定的充电电流，直到高电池电压信号达到第二预定电平，之后充电至最高电压的电池两端的电压基本保持不变，从而导致充电电流降低。

8. 发明授权

US5929577A Brushless DC motor controller 失效
标题翻译：无刷直流电机控制器
公开(公告)号：US5929577A
公开(公告)日：1999-07-27
申请号：US972095
申请日：1997-11-17
申请人： Robert A. Neidorff , David S. Zendzian , John A. O'Connor
发明人： Robert A. Neidorff , David S. Zendzian , John A. O'Connor
IPC分类号： H02P6/18 , H02K23/00
CPC分类号： H02P6/182
摘要： A brushless DC motor controller including a track and hold circuit responsive to the voltage at the motor centertap terminal and the voltage across at least one motor winding in order to determine the position of the rotor by detecting zero crossings of the back EMF of the unenergized winding in a manner having reduced susceptibility to noise. In one embodiment, the output of the track and hold circuit is interpolated to reduce the effects of pulse width modulation noise on rotor position detection. The drive signals controlling a plurality of electronically controlled switches which effect energization of the windings are chopped in order to control the speed of the motor. In one embodiment, the switch connected to a positive voltage is chopped when the sensed back EMF is positive and the switch connected to the negative voltage is chopped when the sensed back EMF is negative. Also provided is a PWM disable circuit for selectively disabling a PWM signal used to chop the drive signals in order to further reduce the effects of noise on rotor position detection.
摘要翻译：一种无刷直流电动机控制器，其包括响应于电动机中心端子处的电压的轨道和保持电路以及跨越至少一个电动机绕组的电压，以便通过检测未通电绕组的反电动势的过零点来确定转子的位置以降低对噪声的敏感性的方式。在一个实施例中，内插轨道和保持电路的输出以减少脉宽调制噪声对转子位置检测的影响。控制多个电子控制开关的驱动信号，其实现绕组的通电，以便控制电机的速度。在一个实施例中，当检测到的反电动势为正时，连接到正电压的开关被切断，当感测的反电动势为负时，连接到负电压的开关被切断。还提供了一种PWM禁止电路，用于选择性地禁用用于斩波驱动信号的PWM信号，以进一步减少噪声对转子位置检测的影响。

9. 发明授权

US4012172A Low noise blades for axial flow compressors 失效
标题翻译：用于轴流式压缩机的低噪音叶片
公开(公告)号：US4012172A
公开(公告)日：1977-03-15
申请号：US612220
申请日：1975-09-10
申请人： Pierre G. Schwaar , John A. O'Connor
发明人： Pierre G. Schwaar , John A. O'Connor
IPC分类号： F01D5/14 , F04D29/32 , F04D29/66 , F04D29/38
CPC分类号： F04D29/661 , F01D5/141 , F04D29/324 , Y02T50/673
摘要： A rotor blade configuration is disclosed which greatly reduces noise generated by the low pressure compressor, or fan, of a turbofan engine. The leading edge of the blade is swept forwardly from its hub up to a point of sweep reversal and then swept rearwardly to the tip of the blade. The slope of the curved leading edge line relative to the direction of airflow is gradually decreased from the hub to the tip to maintain the velocity component, of air relative to the blade leading edge, subsonic, while the relative velocity of the air to the blade is above a critical value and supersonic. This substantially eliminates noise producing, standing shock waves along the blade leading edges. Also described are methods for determining the configuration of such blades to obtain these ends with a minimum increase in blade weight and a minimum blade bending and blade attachment stresses.
摘要翻译：公开了一种转子叶片结构，其大大降低了涡扇发动机的低压压缩机或风扇产生的噪音。叶片的前缘从其轮毂向前扫掠到扫掠点，然后向后扫掠到叶片的尖端。弯曲的前缘线相对于气流方向的斜度从轮毂到尖端逐渐减小，以保持空气相对于叶片前缘的亚音速的速度分量，而空气到叶片的相对速度超过临界值和超音速。这大大地消除了沿着刀片前缘的产生噪音的立式冲击波。还描述了用于确定这种叶片的构造以获得这些端部的方法，其中叶片重量的最小增加和最小的叶片弯曲和叶片附着应力。

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