专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

71. 发明授权

US3493811A Epitaxial semiconductor material on dissimilar substrate and method for producing the same 失效
标题翻译：二极管基板上的外延半导体材料及其制造方法
公开(公告)号：US3493811A
公开(公告)日：1970-02-03
申请号：US3493811D
申请日：1966-06-22
申请人： HEWLETT PACKARD CO
发明人： EWING RICHARD E
IPC分类号： H01L21/00 , H01L21/20 , H01L33/00 , H05B41/29
CPC分类号： H01L33/0062 , H01L21/00 , H01L21/02395 , H01L21/02461 , H01L21/02463 , H01L21/0251 , H01L21/02543 , H01L21/02546 , H01L21/0262 , H01L33/00 , Y10S148/056 , Y10S148/065 , Y10S148/067

72. 发明授权

US5925989A Buck converter switching scheme 失效
标题翻译：降压转换器切换方案
公开(公告)号：US5925989A
公开(公告)日：1999-07-20
申请号：US726708
申请日：1996-10-07
申请人： Hendrik J. Blankers
发明人： Hendrik J. Blankers
IPC分类号： H05B41/282 , H05B41/28 , H05B41/288 , H05B41/29
CPC分类号： H05B41/28 , H05B41/2886 , Y02B20/202 , Y10S315/07
摘要： A circuit arrangement for igniting and operating a high-pressure discharge lamp is provided with a switching device, inductive device and a rectifier which together form a Buck converter, connected to input terminals for connection to a supply source and output terminals for connection of the lamp. The lamp is supplied with a current through periodic switching of the switching device alternatively into a conducting and a non-conducting state by means of a switch-on and switch-off signal, respectively. The inductive device includes a primary and a secondary winding with the secondary winding forming part of an integration network for generating the switch-off signal. The secondary winding also forms part of a voltage divider network for generating the switch-on signal. A very simple circuit arrangement is thereby achieved.
摘要翻译：用于点燃和操作高压放电灯的电路装置设置有一起形成Buck转换器的开关装置，电感装置和整流器，其连接到用于连接到电源的输入端子和用于连接灯的输出端子。通过分别通过接通和断开信号将开关器件周期性地切换成导通状态和非导通状态，来向灯提供电流。感应装置包括初级和次级绕组，次级绕组形成用于产生关断信号的集成网络的一部分。次级绕组也构成用于产生接通信号的分压网络的一部分。由此实现了非常简单的电路装置。

73. 发明授权

US5432409A Electronic ballast with parallel-tuned output circuit 失效
标题翻译：具有并联调谐输出电路的电子镇流器
公开(公告)号：US5432409A
公开(公告)日：1995-07-11
申请号：US196812
申请日：1994-02-02
申请人： Ole K. Nilssen
发明人： Ole K. Nilssen
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/5387 , H03K3/30 , H05B41/24 , H05B41/28 , H05B41/282 , H05B41/295 , H05B41/38 , H05B41/392 , H05B41/29
CPC分类号： H02M7/53846 , H02M7/53832 , H02M7/53835 , H02M7/53873 , H03K3/30 , H05B41/245 , H05B41/28 , H05B41/2827 , H05B41/295 , H05B41/38 , H05B41/3925 , Y02B20/185 , Y02B70/1441 , Y10S315/05
摘要： Power to a self-oscillating inverter ballast is supplied from a DC voltage source through an inductor means having two separate windings on a common magnetic core--with one winding being positioned in each leg of the power supply. The inverter is loaded by way of a parallel-tuned L-C circuit connected across the inverter's output, thereby providing a sinusoidal voltage thereat. A fluorescent lamp is connected by way of a current-limiting capacitor with the inverter's output.
摘要翻译：自振荡逆变器镇流器的功率由直流电压源通过在公共磁芯上具有两个分离的绕组的电感器装置提供，一个绕组位于电源的每个支路中。逆变器通过并联调谐的L-C电路加载在变频器的输出端，从而在其上提供正弦电压。荧光灯通过限流电容器与变频器的输出相连。

74. 发明授权

US5422546A Dimmable parallel-resonant electric ballast 失效
标题翻译：可调光并联电镇流器
公开(公告)号：US5422546A
公开(公告)日：1995-06-06
申请号：US67063
申请日：1993-07-08
申请人： Ole K. Nilssen
发明人： Ole K. Nilssen
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H02M7/5387 , H03K3/30 , H05B41/24 , H05B41/28 , H05B41/282 , H05B41/295 , H05B41/38 , H05B41/392 , H05B41/29
CPC分类号： H02M7/53832 , H02M7/53835 , H02M7/53846 , H02M7/53862 , H02M7/53873 , H03K3/30 , H05B41/245 , H05B41/28 , H05B41/2827 , H05B41/295 , H05B41/38 , H05B41/3925 , Y02B20/185 , Y02B70/1441 , Y10S315/04 , Y10S315/05
摘要： A pre-converter is connected with AC power line voltage and provides DC voltage across a pair of DC terminals. A current-limiting inductor, a self-oscillating parallel-resonant inverter, and a periodically activated FET switch are series-connected with one another across the DC terminals. The inverter provides a high-frequency (e.g., 20-30 kHz) substantially sinusoidal output voltage across its output terminals. Each of plural rapid-start fluorescent lamps is connected across the output terminals by way of a current-limiting capacitor. The magnitude of the resulting lamp current depends on the RMS magnitude of the output voltage. In turn, for a given load condition, this RMS magnitude depends on the average magnitude of the unidirectional current drawn by the inverter from the DC terminals; which average magnitude is determined by the ON/OFF duty-cycle of the FET switch. The FET switch is turned ON/OFF at twice the frequency of the inverter's output voltage. By adjusting the ON/OFF-ratio, the average magnitude of the unidirectional current supplied to the inverter is correspondingly adjusted, thereby resulting in a corresponding adjustment in the magnitude of the lamp current.
摘要翻译：预转换器连接有交流电源线电压，并在一对直流端子之间提供直流电压。电流限制电感器，自谐振并联谐振逆变器和周期性激活的FET开关在直流端子上彼此串联连接。逆变器在其输出端子上提供高频（例如，20-30kHz）的基本正弦输出电压。多个快速启动荧光灯中的每一个通过限流电容器连接在输出端子两端。所得灯电流的大小取决于输出电压的RMS幅值。反过来，对于给定的负载条件，该RMS幅度取决于逆变器从直流端子吸取的单向电流的平均幅度; 该平均幅度由FET开关的ON / OFF占空比决定。 FET开关以变频器输出电压的两倍频率打开/关闭。通过调整ON / OFF比，相应地调整提供给逆变器的单向电流的平均幅度，从而对灯电流的大小进行相应的调整。

75. 发明授权

US5387848A Fluorescent lamp ballast with regulated feedback signal for improved power factor 失效
标题翻译：具有调节反馈信号的荧光灯镇流器，以提高功率因数
公开(公告)号：US5387848A
公开(公告)日：1995-02-07
申请号：US076566
申请日：1993-06-14
申请人： John M. Wong
发明人： John M. Wong
IPC分类号： H02M1/00 , H02M1/42 , H02M7/5383 , H05B41/28 , H05B41/29 , H05B41/36
CPC分类号： H02M1/425 , H02M7/53832 , H05B41/28 , Y02B70/126 , Y10S315/05
摘要： A fluorescent lamp ballast having improved power factor by providing high frequency signals fed back to the a.c. side of the ballast rectifier. The feedback signal is regulated by limiting or reducing the voltage gain of the feedback signal based on the level of the unregulated feedback signal or rectified signal, respectively.
摘要翻译：一种荧光灯镇流器，通过提供反馈给交流电源的高频信号而具有改善的功率因数。侧面的镇流整流器。通过分别基于未调节的反馈信号或整流信号的电平来限制或减小反馈信号的电压增益来调节反馈信号。

76. 发明授权

US5378931A Low leakage fuse blown detection circuit 失效
标题翻译：低漏电保险丝熔断检测电路
公开(公告)号：US5378931A
公开(公告)日：1995-01-03
申请号：US40696
申请日：1993-03-31
申请人： Daniel Bolda , Michael R. Havey , Anthony G. Gibart
发明人： Daniel Bolda , Michael R. Havey , Anthony G. Gibart
IPC分类号： H02H3/04 , H02H3/24 , H05B41/29
CPC分类号： H02H3/046 , Y10T307/865
摘要： A fuse blown detection circuit for use in conjunction with the control transistor output circuits of a programmable controller which provides low leakage after the fuse is blown. The detection circuit comprises a pair of voltage dividers and a diagnostic triggering device forming an H-bridge network connected across the terminals of the fuse and a blocking diode. When the fuse is blown the voltage levels defined by the dividers change to activate the trigger device and enable a diagnostic signal indicative of the fuse blown condition while the blocking diode prevents current flow back through the control transistor and output circuit.
摘要翻译：熔丝熔断检测电路，与可编程控制器的控制晶体管输出电路结合使用，可在保险丝熔断之后提供低泄漏。检测电路包括一对分压器和诊断触发装置，形成连接在保险丝的端子和阻塞二极管之间的H桥网络。当保险丝熔断时，由分压器限定的电压电平改变以启动触发装置，并启用指示保险丝烧断状态的诊断信号，同时阻塞二极管阻止电流流过控制晶体管和输出电路。

77. 发明授权

US5341067A Electronic ballast with trapezoidal voltage waveform 失效
标题翻译：电子镇流器带梯形电压波形
公开(公告)号：US5341067A
公开(公告)日：1994-08-23
申请号：US46171
申请日：1993-04-27
申请人： Ole K. Nilssen
发明人： Ole K. Nilssen
IPC分类号： H02M7/5383 , H03K3/30 , H05B41/24 , H05B41/28 , H05B41/282 , H05B41/295 , H05B41/38 , H05B41/392 , H05B41/29 , H05B41/36
CPC分类号： H02M7/53832 , H03K3/30 , H05B41/245 , H05B41/28 , H05B41/2827 , H05B41/295 , H05B41/38 , H05B41/3925 , Y10S315/05
摘要： An electronic ballast is connected with the AC power line voltage of an ordinary electric utility power line and powers a fluorescent lamp with a substantially sinusoidal current of frequency substantially higher than that or the AC power line voltage. Within the electronic ballast is a half-bridge inverter, whose output voltage exhibits a substantially trapezoidal waveshape. The inverter is powered from a substantially constant DC voltage whose absolute magnitude if substantially higher than the absolute peak magnitude of the AC power line voltage.
摘要翻译：电子镇流器与普通电力公用电力线路的交流电力线电压连接，并对具有基本上正弦电流的荧光灯供电，其频率基本上高于或等于交流电力线电压。电子镇流器内是半桥逆变器，其输出电压呈现大致梯形波形。逆变器由基本恒定的直流电压供电，其绝对幅度远大于交流电源线电压的绝对峰值幅度。

78. 发明授权

US4808887A Low-pressure discharge lamp, particularly fluorescent lamp high-frequency operating system with low inductance power network circuit 失效
标题翻译：低压放电灯，特别是荧光灯高频操作系统，具有低电感电源网络电路
公开(公告)号：US4808887A
公开(公告)日：1989-02-28
申请号：US69857
申请日：1987-07-06
申请人： Hans-Jurgen Fahnrich , Anton Zuchtriegel
发明人： Hans-Jurgen Fahnrich , Anton Zuchtriegel
IPC分类号： H05B41/24 , H05B41/28 , H05B41/29 , H02M1/12 , H02M7/538
CPC分类号： H05B41/28 , H02M2001/4275 , Y02B70/126 , Y10S315/05
摘要： To reduce network harmonics upon connecting a fluorescent lamp (LP1) with a power network rectifier (2) and a push-pull frequency generator (3) and a series resonance circuit (4) to the network, a harmonic filter is connected in the circuit with the fluorescent lamp (LP1) or lamps (LP1, LP2). The harmonic filter includes two diodes (D8, D9), connected in forward current passing direction to the power rectifier (2), and two capacitors (C7, C8) connected, respectively, between the serially connected diodes and a center tap (M1) between the push-pull transistors directly and beyond an inductance forming part of a series resonance circuit (4) for the lamps. In parallel to the two diodes, two further diodes (D10, D11) are provided, having a center tap (M4) which is connected over a capacitor (C9) also to the center tap between the transistors of the push-pull frequency generator (3). Preferably, the capacity value of the further capacitor (C9) is about 0.2 times the total capacity value in the harmonic filter circuit.
摘要翻译：为了在将荧光灯（LP1）与电网整流器（2）和推挽频率发生器（3）和串联谐振电路（4）连接到网络时减少网络谐波，谐波滤波器连接在电路中荧光灯（LP1）或灯（LP1，LP2）。谐波滤波器包括在正向电流通过方向上连接到功率整流器（2）的两个二极管（D8，D9）和分别连接在串联二极管和中心抽头（M1）之间的两个电容器（C7，C8）在推挽晶体管之间直接并且超过形成用于灯的串联谐振电路（4）的一部分的电感。与两个二极管并联，提供两个另外的二极管（D10，D11），其具有中间抽头（M4），该中心抽头（M4）也连接到推挽频率发生器的晶体管之间的中心抽头（C9） 3）。优选地，另外的电容器（C9）的容量值是谐波滤波器电路中总容量值的约0.2倍。

79. 发明授权

US4755723A Strobe flash lamp power supply with afterglow prevention circuit 失效
标题翻译：闪光灯闪光灯电源带有防闪电路
公开(公告)号：US4755723A
公开(公告)日：1988-07-05
申请号：US42304
申请日：1987-04-24
申请人： Scott T. Sikora
发明人： Scott T. Sikora
IPC分类号： H02M3/335 , H05B41/29 , H05B41/34
CPC分类号： H02M3/335
摘要： A variable frequency DC to DC converter generates a pulsed, variable magnitude output voltage where the frequency of the pulsed output voltage varies with changes in the magnitude of the output voltage. An energy storage capacitor is coupled between the converter coupled inductor and strobe flash lamp or other gaseous discharge tube and is periodically discharged through the flash lamp. A variable impedance device in the form of a capacitor is coupled in series with the flow of current from the coupled inductor into the energy storage capacitor to provide a low impedance current flow path when energy is transferred from the coupled inductor into the capacitor and to provide a high impedance current flow path between the converter DC voltage input terminals and the energy storage capacitor when energy is transferred from the capacitor into the strobe flash lamp.
摘要翻译：可变频率DC-DC转换器产生脉冲输出电压的脉冲变化幅度输出电压，其中脉冲输出电压的频率随输出电压幅度的变化而变化。储能电容器连接在转换器耦合的电感器和闪光灯或其它气体放电管之间，并通过闪光灯定期放电。电容器形式的可变阻抗器件与来自耦合的电感器的电流流与能量存储电容器串联耦合，以便当能量从耦合电感器传输到电容器中时提供低阻抗电流流动路径，并提供当能量从电容器转移到闪光灯闪光灯中时，转换器直流电压输入端子和储能电容器之间的高阻抗电流流动路径。

80. 发明授权

US4484108A High frequency ballast-ignition system for discharge lamps 失效
标题翻译：放电灯用高频镇流器点火系统
公开(公告)号：US4484108A
公开(公告)日：1984-11-20
申请号：US404021
申请日：1982-08-02
申请人： Edward H. Stupp , Mark W. Fellows , Leonard R. Guarnera
发明人： Edward H. Stupp , Mark W. Fellows , Leonard R. Guarnera
IPC分类号： H05B41/295 , H05B41/29
CPC分类号： H05B41/295 , Y10S315/07
摘要： A high frequency oscillator-inverter ballast-ignition system for a discharge lamp includes a leakage reactance transformer that forms a part of the oscillator-inverter and also couples same to the discharge lamp. An impedance element electrically couples the primary and secondary windings of the transformer in additive phase to provide more reliable lamp ignition over a wider range of voltage and temperature than was heretofore possible. The preheat time period of the lamp cathodes can be better controlled by a proper choice of the transformer heater winding turns.
摘要翻译：用于放电灯的高频振荡器 - 逆变器镇流器 - 点火系统包括形成振荡器 - 反相器的一部分并且还将其耦合到放电灯的漏电抗变压器。阻抗元件以相位相电耦合变压器的初级绕组和次级绕组，以在比以前更大的电压和温度范围内提供更可靠的灯点火。通过适当选择变压器加热器绕组匝可以更好地控制灯阴极的预热时间。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式