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公开(公告)号：US4987347A
公开(公告)日：1991-01-22
申请号：US320726
申请日：1989-03-08
IPC分类号： H05B39/04 , H05B41/292
CPC分类号： H05B41/2928 , H05B39/045 , Y10S315/02 , Y10S315/07
摘要： A lamp driver circuit is presented herein for driving a lamp circuit with an AC squarewave voltage at a relatively high frequency. The driver circuit includes a self-oscillating half-bridge circuit having a pair of input terminals connected across a DC voltage supply, which may be obtained from rectifying an AC voltage signal, and a pair of output terminals connected across a lamp circuit including a lamp, either a resistive lamp or a gaseous discharge lamp, to be energized. The circuit also includes a pair of capacitors connected together in series across the input terminals and having a junction therebetween connected to a first one of the output terminals. The bridge circuit also includes first and second switching transistors connected together in series across the input terminals. A transformer is provided having first and second windings thereon respectively connected to the first and second switching transistors for alternately applying forward biasing base drive current to the first and second transistors. A third winding on the transformer is connected in series from the junction of the two transistors to a second one of the output terminals for purposes of supplying a squarewave voltage across the output terminals for driving the lamp circuit. A starter circuit serves to start the half-bridge circuit by initially turning on one of the switching transistors in such a manner that while one transistor is being forward biased into conduction, the other transistor is reverse biased.
摘要翻译： 本文提出了一种灯驱动器电路，用于以较高频率驱动具有交流方波电压的灯电路。 驱动器电路包括自振荡半桥电路，其具有连接在直流电压源上的一对输入端子，该一对输入端子可以从整流交流电压信号获得;以及一对输出端子，其连接在包括灯 ，电阻灯或气体放电灯，被激励。 该电路还包括串联连接在输入端上的一对电容器，并且具有连接到第一输出端子的连接点。 桥接电路还包括串联连接在输入端子上的第一和第二开关晶体管。 提供一种变压器，其具有分别连接到第一和第二开关晶体管的第一和第二绕组，用于交替地向第一和第二晶体管施加正向偏置基极驱动电流。 变压器上的第三绕组从两个晶体管的结点串联连接到输出端的第二绕组，用于在输出端上提供方波电压以驱动灯电路。 起动器电路用于通过首先以一个晶体管正向偏置为导通的方式首先接通其中一个开关晶体管来启动半桥电路，另一个晶体管被反向偏置。
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2.发明授权
公开(公告)号：US4555647A
公开(公告)日：1985-11-26
申请号：US749129
申请日：1985-06-27
摘要： Ballast circuits for a gas discharge tube are disclosed. One embodiment of a single-phase non-inductive ballast for operation of a gas discharge tube by direct current (D.C.) using a resistive current-limiting means and a relatively small capacitor is disclosed. The D.C. ballast circuit generates a timed pulse addition (TPA). The D.C. ballast circuit includes an arrangement of switching means which controls the discharge of a capacitive energy storage means so as to supply the reignition and the restrike energy in the form of timed pulse additions (TPA) that may be needed for the gas discharge tube. Other embodiments are disclosed for the ballast circuit which operate directly from the A.C. line and control the discharge of a capacitive storage means to supply reignition and restrike energy in the form of timed pulse additions (TPA) that may be needed for the gas discharge tube.
摘要翻译： 公开了用于气体放电管的镇流器电路。 公开了通过使用电阻限流装置和相对较小的电容器的直流（DC）操作气体放电管的单相无感镇流器的一个实施例。 直流镇流器电路产生定时脉冲加法（TPA）。 直流镇流器电路包括开关装置的装置，其控制电容性能量存储装置的放电，以便以气体放电管可能需要的定时脉冲加法（TPA）的形式提供重新点火和再起弧能量。 公开了用于镇流器电路的其它实施例，该镇流器电路直接从交流线路操作，并且控制电容性存储装置的放电以提供气体放电管可能需要的定时脉冲加法（TPA）的形式的重新点火和再起弧能量。
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公开(公告)号：US06674249B1
公开(公告)日：2004-01-06
申请号：US09695257
申请日：2000-10-25
申请人： Robert A. Leskovec
发明人： Robert A. Leskovec
IPC分类号： H05B3700
CPC分类号： H05B41/388 , H05B41/38 , H05B41/46 , Y10S315/05
摘要： A circuit and method for running a metal halide arc discharge lamp from an AC power source. The circuit includes a rectifier for producing a DC voltage. The lamp is resistively ballasted by a current limiting filament connected in series with the lamp. The circuit includes a switch that closes during start up of the lamp so that the resistive filament is energized to provide immediate light prior to the lamp entering the normal run mode.
摘要翻译： 一种用于从AC电源运行金属卤化物电弧放电灯的电路和方法。 该电路包括用于产生直流电压的整流器。 该灯被与灯串联连接的限流灯电阻地镇流。 该电路包括在灯的启动期间闭合的开关，使得电阻丝被激励以在灯进入正常运行模式之前提供即时的光。
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公开(公告)号：US5896013A
公开(公告)日：1999-04-20
申请号：US600262
申请日：1996-02-12
申请人： Robert A. Leskovec
发明人： Robert A. Leskovec
CPC分类号： H05B41/18 , Y10S315/05
摘要： Ballast circuitry for a metal halide lamp is disclosed enabling sustained operation with a typical 120 volt AC power source. A novel auxiliary circuit network is operatively associated with inductive type starting circuit means to provide lamp reignition when needed during each half-cycle of the AC power supply. The present auxiliary circuit network employs breakover switching means connected in series with capacitor storage means for further connection across the operating discharge lamp.
摘要翻译： 公开了一种用于金属卤化物灯的镇流器电路，其能够利用典型的120伏交流电源进行持续运行。 一种新颖的辅助电路网络与感应式起动电路装置可操作地相关联，以在交流电源的每个半周期期间需要时提供灯重新点火。 本辅助电路网络采用与电容器存储装置串联连接的断开开关装置，用于跨工作放电灯进一步连接。
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公开(公告)号：US4904907A
公开(公告)日：1990-02-27
申请号：US161058
申请日：1988-02-26
IPC分类号： B60Q1/04 , H05B41/16 , H05B41/24 , H05B41/282 , H05B41/292
CPC分类号： H05B41/2928 , Y02B20/208 , Y10S315/07
摘要： A ballast circuit and method of operating gas discharge lamps are disclosed. The ballast circuit generates a relatively low frequency regulated square-wave current which advantageously provides for operating the gas discharge lamps during their run mode. The square-wave current delivered to the electrodes of the gas discharge lamp reduces or substantially eliminates the cataphoresis effects typically created by D.C. and 60 Hz operation of the gas discharge lamp while also reducing or substantially eliminating the detrimental acoustics resonance effects typically created by operating the gas discharge lamps at relatively high frequency of excitations.
摘要翻译： 公开了镇流器电路和操作气体放电灯的方法。 镇流器电路产生相对低频率调节的方波电流，其有利地提供在其运行模式期间操作气体放电灯。 传递到气体放电灯的电极的方波电流降低或基本上消除了通常由气体放电灯的DC和60Hz操作产生的电泳效应，同时还减少或基本消除了通常通过操作所产生的有害的声学共振效应 气体放电灯的激发频率相对较高。
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公开(公告)号：US4584499A
公开(公告)日：1986-04-22
申请号：US722480
申请日：1985-04-12
IPC分类号： H01L41/04 , H01L41/107 , H02M1/08 , H01L41/08
CPC分类号： H01L41/044 , H01L41/107 , H02M1/08
摘要： A piezoelectric transformer signal coupler utilizes a drive circuit including an oscillator constructed to excite the primary of a piezoelectric transformer at its characteristic anti-resonant frequency. Positive feedback signals modulated by the time domain response characteristic of the particular piezoelectric transformer force the oscillator to lock onto its characteristic anti-resonant frequency despite variations thereof due to temperature drift and secondary loading. The resulting drive circuit is implementable as a miniature, low mass integrated circuit mountable on the transformer's piezoceramic wafer to create a signal coupler of a single integrated structure.
摘要翻译： 压电变压器信号耦合器利用包括振荡器的驱动电路，该振荡器构造成以其特征的反谐振频率激发压电变压器的初级。 由特定压电变压器的时域响应特性调制的正反馈信号迫使振荡器锁定在其特性反谐振频率上，尽管由于温度漂移和二次负载引起的变化。 所得到的驱动电路可实现为可安装在变压器压电陶瓷晶片上的微型低质量集成电路，以创建单个集成结构的信号耦合器。
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公开(公告)号：US4574219A
公开(公告)日：1986-03-04
申请号：US613926
申请日：1984-05-25
申请人： John M. Davenport , Richard L. Hansler , Ralph M. Potter , John M. Blank , Dimitri M. Speros , Arthur S. Homa , Amarendra Mishra , Robert A. Leskovec
发明人： John M. Davenport , Richard L. Hansler , Ralph M. Potter , John M. Blank , Dimitri M. Speros , Arthur S. Homa , Amarendra Mishra , Robert A. Leskovec
IPC分类号： H01J61/073 , H01J61/56 , H05B35/00 , H01J7/44
CPC分类号： H05B41/46 , H01J61/0735 , H01J61/56 , H05B35/00
摘要： A lighting unit having a filament serving as a supplementary light source, an improved gas discharge tube serving as a main light source having improved electrodes and an improved ballast circuit operating in cooperation with the improved electrodes is disclosed. Various embodiments of the improved electrodes and various embodiments of the improved ballast circuits are disclosed. The improved ballast circuit operating in cooperation with the improved electrodes provides for thermionic arc conditions in the operation of the gas discharge tube substantially immediately after the application of voltage applied to the unit.
摘要翻译： 公开了具有用作辅助光源的灯丝的照明单元，具有改进的电极的主要光源的改进的气体放电管和与改进的电极配合工作的改进的镇流器电路。 公开了改进的电极的各种实施例和改进的镇流器电路的各种实施例。 与改进的电极协同工作的改进的镇流器电路在施加施加到单元的电压之后基本上立即在气体放电管的操作中提供热电弧条件。
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