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81. 发明授权

US5883472A Circuit for operating a discharge lamp 失效
标题翻译：用于操作放电灯的电路
公开(公告)号：US5883472A
公开(公告)日：1999-03-16
申请号：US894053
申请日：1997-08-12
申请人： Franz Raiser
发明人： Franz Raiser
IPC分类号： H05B41/24 , H05B41/285 , H05B41/29
CPC分类号： H05B41/285 , Y02B20/183
摘要： The invention concerns a circuit for operating a discharge lamp with a habridge generator (T1, T2) wherein a turn-off transistor (T3) can stop the half-bridge generator The energy source for the base current of the turn-off transistor (T3) is formed by starter capacitor (C3) which starts the half-bridge generator (T1, T2), In addition, the collector-emitter section of the turn-off transistor (T3) is directly between the base of the lower transistor (T2) of the half-bridge generator and earth.
摘要翻译： PCT No.PCT / DE96 / 00198 Sec。 371日期：1997年8月12日 102（e）日期1997年8月12日PCT PCT 1996年2月8日PCT公布。公开号WO96 / 25833 日期：1996年8月27日本发明涉及一种用于操作具有半桥发生器（T1，T2）的放电灯的电路，其中关断晶体管（T3）可以停止半桥发生器。基极电流的能量源关断晶体管（T3）由启动半桥发生器（T1，T2）的起动电容器（C3）形成，此外，截止晶体管（T3）的集电极 - 发射极部分直接位于半桥发生器和地的下部晶体管（T2）的基极。

82. 发明授权

US4873471A High frequency ballast for gaseous discharge lamps 失效
标题翻译：用于气体放电灯的高频镇流器
公开(公告)号：US4873471A
公开(公告)日：1989-10-10
申请号：US106180
申请日：1987-10-08
申请人： Thomas E. Dean , William H. Henrich , David M. Fischer , Lawrence J. Stratton , Herbert E. Pietsch
发明人： Thomas E. Dean , William H. Henrich , David M. Fischer , Lawrence J. Stratton , Herbert E. Pietsch
IPC分类号： H05B41/285
CPC分类号： H05B41/285 , H05B41/2856 , H05B41/2858 , Y02B20/183 , Y10S315/07
摘要： An electronic frequency inverter circuit receives input electrical power at a lower frequency and energizes a load circuit including gaseous discharge lamps in a range of higher frequencies. First and second semiconductors are operated alternatively by a logic circuit in current mode control such that the switches operate at the high frequency range and the frequency of current in the load circuit varies as the magnitude of said source voltage varies. The load circuit has an impedance which varies with frequency such that the peak amplitude of the load current remains substantially constant despite variations in the magnitude of said source voltage to achieve a desirable crest factor for the lamp current. A high current limit circuit rapidly turns off the switches when excessively high current begins to flow through the switches. Low voltage is supplied in port from the high frequency current. Normal operation is ensured during start-up, for reduced line voltage and for a semiconductor chip embodiment.
摘要翻译：电子频率逆变器电路以较低频率接收输入电力，并且在包括较高频率范围内的气体放电灯的负载电路通电。第一和第二半导体通过电流模式控制中的逻辑电路交替地操作，使得开关在高频范围内工作，并且负载电路中的电流频率随着所述源电压的幅度变化而变化。负载电路具有随频率而变化的阻抗，使得即使所述源极电压的幅度有变化，负载电流的峰值振幅也保持基本恒定，以实现灯电流的理想波峰因数。高电流限制电路在过高的电流开始流过开关时迅速关闭开关。从高频电流向端口提供低电压。在启动期间，为了降低线路电压和半导体芯片实施例，确保正常操作。

83. 发明授权

US4488090A Advertising sign system 失效
标题翻译：广告标志系统
公开(公告)号：US4488090A
公开(公告)日：1984-12-11
申请号：US415743
申请日：1982-09-07
申请人： Bruce J. Hancock
发明人： Bruce J. Hancock
IPC分类号： G09F13/00 , H05B41/285 , H05B37/00
CPC分类号： H05B41/285 , G09F13/00 , Y02B20/183 , Y10T307/297
摘要： A low-voltage system is disclosed for supplying operating power to high-voltage neon light tubes located within housings in the forms of letters and other shapes commonly used for illuminated advertising on the outside of buildings. Within the building, a first step-down transformer is connected to the conventional household power supply of 110 volt 60 Hz current. The step-down transformer produces a low-voltage signal in the range of 16 to 24 volts at the 60 Hz operating frequency. The low-voltage wires are passed through the exterior wall of the building on which the advertising sign housing is mounted and require no special precautions or high-voltage insulation due to the extremely low voltage involved. Within each high-voltage lamp housing, a solid state low-voltage to high-voltage conversion circuit is mounted. The input to this circuit comprises the 16 to 24 volt 60 Hz low-voltage current. This signal is supplied to a full-wave rectifier, which supplies operating power to a high-frequency oscillator (10,000 Hz to 30,000 Hz), the output of which, in turn, is used to drive a power switching transistor connected to the primary winding of a step-up transformer. This high-frequency signal, as obtained from the secondary winding of the step-up transformer, is used to supply a high-voltage operating alternating current to the neon tube mounted within the sign housing.
摘要翻译：公开了一种低压系统，用于以位于建筑物外面的通常用于照明广告的字母和其他形状的形式的壳体内的高压氖灯管提供工作电力。在建筑物内，第一降压变压器连接到110伏特60赫兹电流的常规家用电源。降压变压器在60 Hz工作频率下产生16至24伏范围内的低电压信号。低压电线穿过安装有广告牌的建筑物的外墙，由于所涉及的电压极低，不需要特别的预防措施或高压绝缘。在每个高压灯壳内安装有固态低压至高压转换电路。该电路的输入包括16至24伏特60赫兹的低压电流。该信号被提供给全波整流器，其向高频振荡器（10,000Hz至30,000Hz）提供工作电力，其输出又用于驱动连接到初级绕组的功率开关晶体管的升压变压器。从升压变压器的次级绕组获得的高频信号用于向安装在标志外壳内的氖管提供高压工作交流电。

84. 发明授权

US4293799A Power supply systems 失效
标题翻译：电源系统
公开(公告)号：US4293799A
公开(公告)日：1981-10-06
申请号：US95384
申请日：1979-11-19
申请人： Frank B. Roberts
发明人： Frank B. Roberts
IPC分类号： H05B41/285 , H05B41/24
CPC分类号： H05B41/285 , Y02B20/183 , Y10T307/422
摘要： A power supply system for operating fluorescent lamps in a hazardous atmosphere comprises a 1 kHz to 500 kHz constant current power supply which feeds primary windings of transformers which are connected together in series. Fluorescent lamps are connected across the transformer secondary windings. A voltage control circuit is connected to the supply supply output to ensure that the amount of electrical energy supplied to the transformers cannot ignite the atmosphere under any normal or fault condition. Capacitors are connected in series with the transformer primary windings to reduce the circuit reactance so that, for a given level of supply voltage, an increased number of lamps can be fed with starting voltage. Due to the substantially constant current which is fed through the transformer primary windings, the situation cannot occur that the firing of one lamp prevents the others from firing. The transformers preferably include windings to feed heaters of the lamps. The lamps may be disconnected from the supply by removal of the transformer cores or by separation of the windings.
摘要翻译：用于在危险气氛中操作荧光灯的电源系统包括1kHz至500kHz的恒流电源，其馈送串联连接在一起的变压器的初级绕组。荧光灯连接在变压器次级绕组两端。电压控制电路连接到电源输出，以确保供应给变压器的电能不能在任何正常或故障条件下点燃大气。电容器与变压器初级绕组串联连接，以减小电路电抗，从而在给定的电源电压范围内，增加数量的灯可以馈送起始电压。由于通过变压器初级绕组馈送的基本上恒定的电流，不能发生一个灯的点火阻止其他发光的情况。变压器优选地包括供给灯的加热器的绕组。灯可以通过去除变压器芯或通过分离绕组与电源断开。

85. 发明公开

EP1912200A2 Driving device of backlight unit, liquid crystal display apparatus having the same, and control method thereof 审中-公开
标题翻译：驱动装置的背光源装置，液晶显示装置，用它和控制方法
公开(公告)号：EP1912200A2
公开(公告)日：2008-04-16
申请号：EP07116064.2
申请日：2007-09-11
申请人： Samsung Electronics Co., Ltd.
发明人： Lee, Seung-eon
IPC分类号： G09G3/34
CPC分类号： H05B41/285 , G02F1/133604 , G02F2001/133612 , G09G3/3406 , G09G2320/041
摘要： A liquid crystal display (LCD) apparatus includes: an LCD panel; a light source unit which emits light to the LCD panel; a heating device which preheats the light source unit; a temperature sensing unit which senses temperature of the light source unit and outputs a temperature information; and a variable voltage supplying unit which changes a driving voltage to be supplied to the heating device according to the temperature information of the temperature sensing unit.
摘要翻译：一种液晶显示（LCD）装置，包括：LCD面板; 的光源单元，其发射光到LCD面板; 一个加热装置，其预热光源单元; 温度感测单元，其感测所述光源单元的温度，并输出温度信息; 和其改变的驱动电压的可变电压供给单元被供给到加热装置gemäß到温度感测单元的温度的信息。

86. 发明公开

EP1719034A2 A PROTECTIVE AND MEASURE DEVICE FOR MULTIPLE COLD CATHODE FLOURESCENT LAMPS 有权
标题翻译：保护和测量器具，用于多个冷阴极荧光灯
公开(公告)号：EP1719034A2
公开(公告)日：2006-11-08
申请号：EP04777642.2
申请日：2004-07-07
申请人： Lu, Chao-Cheng
发明人： LU, Chao-Cheng
IPC分类号： G05F1/00
CPC分类号： H05B41/2855 , H05B41/285 , H05B41/2856 , Y02B20/183
摘要： The preferred embodiment pertains to an electronic ballast functioning as a high-frequency power source for driving multiple cold cathcode flourescent lamps (CCFLs), primarily by parallel connecting one end of each of a plurality of CCFL to a measure element to measure the LED power source provided by the measure element's photocoupler, and concurrently serially connect the photocoupler's collect-emitter terminal, followed by employing comparators to assess the open circuit, over current, and under current among multiple cold cathcode flourescent lamps. Said electronic ballast serves to protect CCFLs,and thus contribute to the quality and protection required for large LCD monitors.

87. 发明公开

EP0659037A3 Gas discharge lamp ballast circuit with indicator of ballast operability 失效
标题翻译：镇流器用于放电灯，具有工作容量显示。
公开(公告)号：EP0659037A3
公开(公告)日：1997-03-26
申请号：EP94308790.8
申请日：1994-11-29
申请人： GENERAL ELECTRIC COMPANY
发明人： Minarczyk, Michael Martin , Nerone, Louis Robert , Oberle, Joseph C. , Ronald, Brian M. , Harsa, Clarence J. , Thomas, Edward John
IPC分类号： H05B41/29
CPC分类号： H05B41/2856 , H01J61/56 , H05B41/285 , Y02B20/183 , Y02B20/185 , Y10S315/05
摘要： A gas discharge lamp ballast with an indicator of operability of the ballast is disclosed. The ballast circuit comprises circuitry for providing a d.c. bus voltage on a bus conductor with respect to a ground, and a resonant load circuit. The resonant load circuit includes lamp terminals for connecting to a removable gas discharge lamp, a resonant inductor, and a resonant capacitor. The resonant inductor and resonant capacitor are selected to set a magnitude, and resonant frequency, of a bidirectional current in the lamp. Further included is a converter circuitry, including first and second serially connected switches coupled between the bus conductor and the ground, and providing to the resonant load circuit, at a node coupled between the first and second switches, a voltage that alternates between first and second voltage levels. Circuitry for generating first and second switch control signals for alternately switching into conduction the first and second switches, including circuitry responsive to a feedback signal representing a current in the resonant load circuit, are further included. The ballast circuit, moreover, includes overload detection circuitry for detecting if voltage applied to the lamp terminals exceeds an overload level; and circuitry for indicating, in response to such an overload condition being detected by the overload detection circuitry, probable operability of the ballast circuit.

88. 发明公开

EP0636284A1 POWER SUPPLY 无效
标题翻译：电源。
公开(公告)号：EP0636284A1
公开(公告)日：1995-02-01
申请号：EP93912465.0
申请日：1993-06-28
申请人： H.P.M. INDUSTRIES PTY LIMITED
发明人： HAYASHI, Koichi
IPC分类号： H02M1 , H02M7 , H05B41
CPC分类号： H02M1/425 , H02M7/537 , H05B41/28 , H05B41/285 , Y02B20/183 , Y02B70/126
摘要： A power supply which incorporates a high frequency inverter and which is suitable for use in conjunction with a fluorescent lamp. The power supply comprises a full wave rectifier (10) and a reservoir capacitor (12) connected across the rectifier for the purpose of providing successive half-cycles of the voltage waveform V2 across the capacitor with a minimum instantaneous voltage level greater than zero. A solid state switching device (14) and an oscillator (15) are connected in circuit with the reservoir capacitor. The oscillator generates a gating signal V3 at a frequency significantly greater than that of the voltage waveform V2 across the reservoir capacitor and applies the gating signal to the switching device. The switching device is arranged to provide an output voltage V4 which has a frequency determined by the applied gating signal V3 and which has a peak amplitude value which varies over successive cycles with the waveform of the voltage V2 across the reservoir capacitor.

89. 发明授权

EP0391383B1 Vorschaltgerät für eine Entladungslampe 失效
标题翻译：放电灯镇流器
公开(公告)号：EP0391383B1
公开(公告)日：1994-07-06
申请号：EP90106420.4
申请日：1990-04-04
申请人： Zumtobel Aktiengesellschaft
发明人： Luger, Siegfried
IPC分类号： H05B41/29
CPC分类号： H05B41/285 , Y02B20/183

90. 发明公开

EP0435228A3 Schaltungsanordnung und Verfahren zum Betreiben (und Zünden) einer Gasentladungslampe 有权
标题翻译：放电灯（和点燃）放电灯的电路和工艺
公开(公告)号：EP0435228A3
公开(公告)日：1992-07-08
申请号：EP90125292.4
申请日：1990-12-21
申请人： Zumtobel Aktiengesellschaft
发明人： Apsner, Bernhard , Luger, Siegfried , Pabst, Wolfgang, Dr.
IPC分类号： H05B41/29
CPC分类号： H05B41/285 , H05B41/2828 , H05B41/3925 , H05B41/3927 , Y02B20/183
摘要： Eine Schaltungsanordnung zum Betreiben, insbesondere zum Zünden, einer Gasentladungslampe (GE), mit einem Resonanzkreis (L₁,C₁,C₀), an welchen die Lampe (GE) mit ihren beiden Heizwendeln bzw. Elektroden anschließbar ist und mit einem Wechselspannungsgenerator (20), der eine Ausgangs-Wechselspannung (u w ) variabler Frequenz und/oder variablen Tastverhältnisses (d) an den Resonanzkreis (L₁,C₁,C₀) abgibt, soll so ausgebildet werden, daß eine nicht beheizte Gasentladungslampe (GE) schonender und gemäß den Vorschriften für explosionsgeschützte Räume gezündet und betrieben werden kann. Dies wird dadurch erreicht, daß der Resonanzkreis (L₁,C₁,C₀) eine erste Resonanzfrequenz (f₁) und eine zweite unterhalb der ersten Resonanzfrequenz (f₁) liegende Resonanzfrequenz (f₀) aufweist und daß zur Einleitung der Zündung der Lampe die wesentliche Frequenzkomponente der Ausgangs-Wechselspannung (u w ) des Wechselspannungsgenerator (20) in der Nähe der ersten Resonanzfrequenz (f₁) liegt und daß nach Zündung der Lampe (GE) die wesentliche Frequenzkomponente der Ausgangs-Wechselspannung (u w ) in der Nähe der zweiten Resonanzfrequenz (f₀) liegt.

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