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11. 发明授权

US5185560A Electronic fluorescent lamp ballast 失效
标题翻译：电子荧光灯镇流器
公开(公告)号：US5185560A
公开(公告)日：1993-02-09
申请号：US663566
申请日：1991-03-04
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
CPC分类号： H02M7/53862 , H02M7/53832 , H02M7/53835 , H02M7/53846 , H02M7/53873 , H03K3/30 , H05B41/245 , H05B41/28 , H05B41/2827 , H05B41/295 , H05B41/38 , H05B41/3925 , Y10S315/07
摘要： A half-bridge inverter is powered from a constant-magnitude DC supply voltage and provides at the inverter's output a first AC output voltage that is describable as a modified squarewave voltage. This first AC voltage is applied across a series-combination of an inductor and a capacitor, the junction between which is clamped to the DC supply voltage. As a result, a second AC voltage gets established across the capacitor; which second AC voltae is also describable as being a modified squarewave voltage. However, the phasing of the second AC voltage is delayed by approximately 90 degrees with respect to the first AC voltage; which results in the voltage across the inductor being of approximately sinuosidal waveform. A fluorescent lamp is connected in series with a ballast capacitor; and the lamp-capacitor series combination is connected across the inductor, thereby reslting in a nearly sinusoidal current being provided to the fluorescent lamp.
摘要翻译：半桥逆变器由恒定直流电源电压供电，并在变频器的输出端提供可被描述为改进的方波电压的第一交流输出电压。该第一交流电压被施加在电感器和电容器的串联组合上，其结点被钳位到直流电源电压。结果，跨越电容器建立了第二交流电压; 该第二AC电压也可被描述为改进的方波电压。然而，相对于第一AC电压，第二AC电压的定相延迟大约90度; 这导致电感器两端的电压大致为正弦波形。荧光灯与镇流电容串联; 并且灯电容器串联组合被连接在电感器两端，由此被提供给荧光灯的几乎正弦电流的电涌。

12. 发明授权

US4688164A Direct-voltage converter for feeding an appliance with an inductive component 失效
标题翻译：直流电压转换器，用于给一个电感元件供电
公开(公告)号：US4688164A
公开(公告)日：1987-08-18
申请号：US836388
申请日：1986-03-05
申请人： Gerard Rilly
发明人： Gerard Rilly
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H02M7/5387
CPC分类号： H02M7/53862 , H02M7/53846
摘要： A direct-voltage converter for supplying an appliance with an inductive component, in which two transistors are connected in series between direct-current voltage terminals and are made alternatively conductive in a push-pull mode by the first of two windings of a transformer. Two free-running diodes are connected in parallel to the transistors, and a junction between the two diodes supplies their output voltage. This junction is connected to a further junction between the transistors, through a third winding on the transformer. An electronic switch is connected in parallel with a fourth winding of the transformer, and is periodically made conductive by the output voltage through a pulse shaper with a switching pulse. The pulse shaper has two direct current circuit points which determine the peak value and relationship of currents flowing through the two transistors. An amplitude-comparison stage in the pulse shaper has inputs connected to the two circuit points. The output voltage of the amplitude-comparison stage controls the frequency of the switching pulse. The arrangement is such that the converter protects against overload.
摘要翻译：一种用于向器具提供电感元件的直流电压转换器，其中两个晶体管串联连接在直流电压端子之间，并通过变压器的两个绕组中的第一绕组以推挽模式交替导电。两个自由运行的二极管并联连接到晶体管，并且两个二极管之间的结点提供其输出电压。该结通过变压器上的第三绕组连接到晶体管之间的另一结。电子开关与变压器的第四绕组并联连接，并且通过具有开关脉冲的脉冲整形器通过输出电压周期性地导通。脉冲整形器具有两个直流电路点，用于确定流经两个晶体管的电流的峰值和关系。脉冲整形器中的幅度比较级具有连接到两个电路点的输入。幅度比较级的输出电压控制开关脉冲的频率。这种布置使得转换器防止过载。

13. 发明授权

US4639845A Voltage inverter 失效
标题翻译：电压变频器
公开(公告)号：US4639845A
公开(公告)日：1987-01-27
申请号：US609470
申请日：1984-05-11
申请人： Eric G. Persson , Ronald D. Veith
发明人： Eric G. Persson , Ronald D. Veith
IPC分类号： H02M7/5383 , H02M7/53846 , H02M3/335
CPC分类号： H02M7/53846
摘要： A voltage inverter is disclosed. A clock circuit provides timing signals to the electronics of the system. Electronics include a circuit for controlling the phase relationship between a pair of square waves, an overcurrent protection circuit, an auto-on circuit, a low voltage shutdown circuit, and output driver transistors for driving a primary transformer. A power transformer is connected to the primary transformer, and the output of the inverter is taken from the secondary transformer. Voltage and current magnitude indicative feedback signals are provided from the output of the inverter with the voltage signal being monitored by the phase varying circuit and the current feedback signal being monitored by the overcurrent protection circuit. Control of the off-time between alternating pulses during a cycle of the output is controlled by overlapping the square waves controlling the driver transistors for exitation of the primary transformer.
摘要翻译：公开了一种电压逆变器。时钟电路向系统的电子设备提供定时信号。电子装置包括用于控制一对方波之间的相位关系的电路，过电流保护电路，自动启动电路，低压关断电路以及用于驱动初级变压器的输出驱动晶体管。电源变压器连接到主变压器，变频器的输出从次级变压器取出。电压和电流幅度指示反馈信号由逆变器的输出提供，电压信号由相变电路监测，电流反馈信号由过流保护电路监控。通过将控制驱动晶体管的方波重叠起来来控制在输出周期期间的交替脉冲之间的关闭时间，以便退出初级变压器。

14. 发明授权

US4318165A Resonant-flyback power supply with filament winding for magnetron and the like loads 失效
标题翻译：谐振反激电源，带有用于磁控管等的灯丝绕组
公开(公告)号：US4318165A
公开(公告)日：1982-03-02
申请号：US141907
申请日：1980-04-21
申请人： William P. Kornrumpf , John N. Park , De Y. Chen
发明人： William P. Kornrumpf , John N. Park , De Y. Chen
IPC分类号： H02M7/5383 , H02M7/53846 , H03B9/10 , H02P13/18 , H05B6/68
CPC分类号： H02M7/53846 , H02M3/33507 , H03B9/10 , Y02B70/1433 , Y02B70/1441
摘要： A filament winding forms a part of the step-up transformer in a flyback-type high-frequency, high-voltage power supply for supplying filament heating energy, in addition to the anode potential supplied by a secondary winding of the transformer, to a magnetron microwave power generator, which is a self-rectifying load. The voltage across the transformer primary winding, and the current flowing through a controllable current path in a switching device connecting the series with that primary winding, are both monitored and compared to reference voltage and current values for establishing the conduction time interval of the switching device to provide active control of the power input to the load.
摘要翻译：除了由变压器的次级绕组提供的阳极电位之外，灯丝绕组形成升压变压器的一部分，用于提供灯丝加热能量的反激式高频，高压电源到磁控管微波发电机，这是一个自整流负载。变压器初级绕组两端的电压以及连接串联与初级绕组的开关装置中的可控电流通路的电流都被监测并与参考电压和电流值进行比较，以建立开关装置的导通时间间隔以提供对负载的功率输入的主动控制。

15. 发明授权

US4163177A Oscillation generator providing oscillations of varying amplitude 失效
标题翻译：振荡发生器提供振幅变化
公开(公告)号：US4163177A
公开(公告)日：1979-07-31
申请号：US842490
申请日：1977-10-17
申请人： Arthur R. Warner , Derrick A. Ward
发明人： Arthur R. Warner , Derrick A. Ward
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H05B41/288 , H05B37/02 , H03B3/02
CPC分类号： H02M7/53862 , H02M7/53846 , H05B41/2885 , Y02B20/202
摘要： An oscillation generator providing a succession of oscillations repetitively and progressively varying in amplitude includes a feedback oscillator arranged to receive its operating voltage from a capacitor that is progressively charged from a periodically fluctuating voltage source by way of an SCR and a timing circuit arranged to progressively vary the timing during the fluctuation period of the source of firing signals applied to the SCR. The timing circuit includes a firing capacitor charged from a unidirectional source and semiconductor switches arranged, when the potential on the firing capacitor attains a predetermined level, to discharge the capacitor into the trigger electrode of the SCR. The time required for the potential on the firing capacitor to reach the predetermined level is varied by a saw-tooth generator that controls the charging potential for the capacitor. The oscillator output may be applied directly to energize an electric discharge tube, or may be applied to a power amplifier fed from a constant source, that in turn energizes a discharge tube.
摘要翻译：提供重复并逐渐变化的振荡的振荡发生器包括：反馈振荡器，被布置成从电容器接收其工作电压，该电容器通过SCR和周期性波动的电压源逐渐充电，定时电路被布置为逐渐变化在施加到SCR的点火信号源的波动期间的定时。定时电路包括从单向源充电的点火电容器和当触发电容器上的电位达到预定电平时将半导体开关布置成将电容器放电到SCR的触发电极中。触发电容器上的电位达到预定电平所需的时间由控制电容器的充电电位的锯齿发电机改变。可以直接施加振荡器输出以激励放电管，或者可以将其施加到从恒定源馈送的功率放大器，其进而激励放电管。

16. 发明授权

US3956684A DC to AC inverter having improved switching efficiency, overload, and thermal protection features 失效
公开(公告)号：US3956684A
公开(公告)日：1976-05-11
申请号：US516773
申请日：1974-10-21
申请人： John P. Walden
发明人： John P. Walden
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H05B6/12 , H02M7/515
CPC分类号： H02M7/53862 , H02M7/53846
摘要： An AC electrical output is produced in the secondary windings of a transformer by alternately switching DC current in a primary winding with active element switches whose alternate switching action is controlled by the stored energy variations in a tertiary winding included with the output transformer and by a high efficiency switching control circuit which facilitates the switching transition of the active elements. This control is achieved in part, by providing a current sensitive latch which is triggered to its conductive state when a predetermined level of primary winding current is detected to thereby initiate a switching transition. This latch circuit is connected to conduct stored electrical charge with respect to the active element switch during the switching transition thus facilitating and promoting the efficiency of the switching operation. In addition, this same current sensitive latch is utilized to terminate normal inverter operations during excessive inverter load conditions and/or in response to detected excessive operation temperatures. In this latter regard, a special thermal protection circuit is employed for triggering the current sensitive latch. The special form of thermal protection circuit is especially adapted to protect integrally formed integrated circuits and is itself integrally formed therewith in a preferred embodiment. The thermal protection circuit includes a temperature sensitive element having a predetermined voltage versus temperature variation at a given current level in combination with a current regulation circuit for supplying and substantially maintaining a predetermined current level through the temperature sensitive element. A special form of periodic restarting circuit is also disclosed wherein another current sensitive latch is utilized to provide periodic starting pulses in the absence of normal inverter operation and to supplement control circuit and switching circuit supply currents during normal inverter operations.

17. 发明授权

US3922582A Current limited oxcillator arrangement 失效
标题翻译：电流有限的氧化锆排列
公开(公告)号：US3922582A
公开(公告)日：1975-11-25
申请号：US49944774
申请日：1974-08-22
申请人： GTE SYLVANIA INC
发明人： PITEL IRA JAY
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H05B41/282 , H05B41/24
CPC分类号： H02M7/53862 , H02M7/53838 , H02M7/53846 , H05B41/2821 , Y10S315/02 , Y10S315/05
摘要： A current limiting oscillator circuit for a low pressure electric discharge lamp wherein an oscillator means is coupled to a DC potential source and to a load circuit coupled to the DC potential source with a current sampling means coupled to the oscillator means and a switching means coupling the current sampling means to the oscillator means whereby the switching means limits the current flow and renders the oscillator means non-conductive while the load circuit renders the oscillator means conductive.
摘要翻译：一种用于低压放电灯的限流振荡器电路，其中振荡器装置与耦合到所述振荡器装置的电流采样装置耦合到DC电位源和耦合到所述DC电势源的负载电路，以及将所述电流采样装置到振荡器装置，由此开关装置限制电流，并且使得振荡器装置不导通，同时负载电路使振荡器装置导通。

18. 发明授权

US3914680A Static inverter 失效
标题翻译：静态逆变器
公开(公告)号：US3914680A
公开(公告)日：1975-10-21
申请号：US54186775
申请日：1975-01-17
申请人： GEN ELECTRIC
发明人： HESLER JOSEPH P , KORZEKWA SAMUEL M
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H02M7/48
CPC分类号： H02M7/53862 , H02M7/53846
摘要： A static inverter is disclosed for d.c. to a.c. conversion comprising a pair of switching semiconductor devices and a power transformer having primary, secondary and feedback windings associated with a linear magnetic core. A small perforation partitions the core into two localized branches at the same time forming a small magnetic loop encircling the perforation. Both power windings encircle the full core, while the feedback windings are associated with one of the branches. One branch is designed to saturate before the other branch and thus before full core saturation. Saturation of one branch affects the feedback derived in a winding encircling either branch - decreasing the feedback in the winding encircling the saturated branch and increasing the feedback in the winding encircling the branch remaining unsaturated. The arrangement permits cyclical control of the feedback to avoid full core saturation and thus avoids overstressing the switching devices. The feedback windings are typically single turn windings. The introduction of an additional single turn primary winding connected in the primary power circuit creates a virtual current transformer utilizing the small magnetic loop which makes the feedback drive proportional to load current. The arrangement is reliable and economical in its use of materials.
摘要翻译：公开了一种静态逆变器，用于直流到a.c. 转换器包括一对开关半导体器件和具有与线性磁芯相关的初级，次级和反馈绕组的电力变压器。小的穿孔将芯分成两个局部分支，同时形成一个环绕穿孔的小磁环。两个功率绕组环绕整个芯，而反馈绕组与其中一个分支相关联。一个分支设计成在另一个分支之前饱和，从而在全核饱和之前饱和。一个分支的饱和影响环绕任一分支的绕组中产生的反馈 - 减小围绕饱和分支的绕组中的反馈，并增加围绕分支保持不饱和的绕组中的反馈。该布置允许反馈的周期性控制以避免全核饱和，并且因此避免了对开关器件的过应力。反馈绕组通常是单匝绕组。引入连接在主电源电路中的附加单匝初级绕组产生利用小磁环的虚拟电流互感器，其使得反馈驱动与负载电流成比例。该装置在使用材料方面是可靠和经济的。

19. 发明授权

US3889153A Power source for fluorescent lamps and the like 失效
标题翻译：荧光灯的电源等
公开(公告)号：US3889153A
公开(公告)日：1975-06-10
申请号：US40231773
申请日：1973-10-01
申请人： IOTA ENGINEERING INC
发明人： PIERCE JOHN T
IPC分类号： H02H7/122 , H02M5/45 , H02M7/5383 , H02M7/53846 , H02M7/53862 , H05B41/285 , H02H7/10 , H05B41/29
CPC分类号： H02M7/53862 , H02H7/122 , H02M5/45 , H02M7/53846 , H05B41/2855 , Y10S315/05 , Y10S315/07
摘要： A power source for operating gas discharge lamps and other loads at high frequency from a high voltage supply, typically using 115 volts ac supply and providing a 20,000 hertz output. An inverter and lamp ballast circuit with fast starting circuitry and open circuit protection.
摘要翻译：用于从高压电源操作气体放电灯和其他负载的电源，通常使用115伏交流电源并提供20,000赫兹输出。具有快速启动电路和开路保护的逆变器和灯镇流器电路。

20. 发明授权

US3882354A Inverter ballast circuit for fluorescent lamp 失效
标题翻译：用于荧光灯的逆变器电路
公开(公告)号：US3882354A
公开(公告)日：1975-05-06
申请号：US38185873
申请日：1973-07-23
申请人： COLEMAN COMPANY
发明人： MAY RANDALL L
IPC分类号： H02M7/5383 , H02M7/53846 , H02M7/53862 , H05B41/298 , H05B41/29 , H05B41/392
CPC分类号： H02M7/53862 , H02M7/53846 , H05B41/2983 , Y10S315/05 , Y10S315/07
摘要： An oscillator including a single transistor is connected in circuit with the primary winding of a stepup transformer. The terminals of a fluorescent lamp are connected between the primary and secondary of the transformer. One filament of the lamp is connected in the base circuit of the transistor. The filament acts as a constant current device to limit the current flowing in the base circuit and thereby permit the inverter to operate over a wide range of input voltages.
摘要翻译：包括单个晶体管的振荡器与升压变压器的初级绕组电路连接。荧光灯的端子连接在变压器的初级和次级之间。灯的一根灯丝连接在晶体管的基极电路中。灯丝用作恒流装置以限制在基极电路中流动的电流，从而允许逆变器在宽范围的输入电压下工作。

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