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1. 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。

2. 发明授权

US06323603B1 Resonant flyback ignitor circuit for a gas discharge lamp control circuit 失效
标题翻译：用于气体放电灯控制电路的谐振反激式点火器电路
公开(公告)号：US06323603B1
公开(公告)日：2001-11-27
申请号：US09251551
申请日：1999-02-17
申请人： Eric G. Persson
发明人： Eric G. Persson
IPC分类号： H05B3700
CPC分类号： H05B41/042 , H05B41/3924
摘要： A gas discharge lamp control circuit includes a series circuit formed by first and second AC input terminals, an inductance and first and second lamp terminals. An ignitor circuit is coupled to the series circuit and selectively couples and decouples at least a portion of the inductance in parallel with the first and second AC input terminals to generate a flyback voltage in the inductance.
摘要翻译：气体放电灯控制电路包括由第一和第二AC输入端子，电感和第一和第二灯端子形成的串联电路。点火器电路耦合到串联电路，并且选择性地将至少一部分电感与第一和第二AC输入端子并联，以在电感中产生回扫电压。

3. 发明授权

US5574338A Control circuit for gas discharge lamps, which has a transformer with start and run windings 失效
标题翻译：气体放电灯控制电路，具有起动和运行绕组的变压器
公开(公告)号：US5574338A
公开(公告)日：1996-11-12
申请号：US487503
申请日：1995-06-07
申请人： Douglas R. Kuusisto , Eric G. Persson
发明人： Douglas R. Kuusisto , Eric G. Persson
IPC分类号： H05B41/288 , H05B41/38 , H05B41/392 , H05B41/36
CPC分类号： H05B41/2885 , H05B41/388 , H05B41/392 , Y02B20/202 , Y02B20/204 , Y10S315/05
摘要： A control circuit for a gas discharge lamp according to the present invention includes a transformer having a primary run winding, a primary start winding and a secondary winding. The primary run winding is coupled to a source of an AC run signal. The secondary winding is coupled to the gas discharge lamp. A current sensor is coupled in series with the gas discharge lamp to sense current flow through the lamp. A high frequency oscillator is coupled to the primary start winding for providing a high frequency start signal to the primary start winding. In a start phase, the oscillator provides the high frequency start signal to the primary start winding to initiate ionization of the gas discharge lamp. Once the gas has sufficiently ionized in the lamp, the control circuit switches from the start phase to a run phase by removing the high frequency start signal from the primary start winding and applying the AC run signal to the primary run winding. Switching between the high frequency start signal and the AC run signal on the low voltage primary side of the transformer allows the transformer to be sized much smaller to match the operating characteristics of the bulb as opposed to its start characteristics.
摘要翻译：根据本发明的用于气体放电灯的控制电路包括具有初级绕组，初级绕组和次级绕组的变压器。主运行绕组耦合到AC运行信号的源。次级绕组耦合到气体放电灯。电流传感器与气体放电灯串联耦合以感测通过灯的电流。高频振荡器耦合到初级启动绕组，用于向初级绕组提供高频启动信号。在启动阶段，振荡器向主起动绕组提供高频启动信号以启动气体放电灯的电离。一旦气体在灯中已经充分电离，控制电路通过从主起动绕组中除去高频启动信号并将AC运行信号施加到初级绕组，从起始相切换到运行阶段。在变压器低压初级侧的高频启动信号和交流运行信号之间切换允许变压器的尺寸要小得多以匹配灯泡的工作特性，而不是其启动特性。

4. 发明授权

US5578908A Phase control circuit having independent half cycles 失效
标题翻译：相位控制电路具有独立的半周期
公开(公告)号：US5578908A
公开(公告)日：1996-11-26
申请号：US487502
申请日：1995-06-07
申请人： Eric G. Persson
发明人： Eric G. Persson
IPC分类号： H02M5/257 , H05B41/392 , H05B37/02
CPC分类号： H02M5/257 , H05B41/3924
摘要： A phase control circuit according to the present invention is configured for connection between and AC source and an AC load. The AC source supplies an AC drive signal having a plurality of sequential positive and negative half cycles. The phase control circuit comprises first and second power switches coupled between the AC source and the AC load. The first power switch conducts current of the AC drive signal after a first phase delay during the positive half cycles. The second power switch conducts current of the AC drive signal after a second phase delay during the negative half cycles. A feedback balance circuit is coupled between the AC load and the first and second power switches. The feedback balance circuit determines a DC current component in the AC load and generates a phase delay correction signal as a function of the DC current component. At least one of the first and second phase delays is adjusted independently of the other phase delay as a function of the phase delay correction signal to limit the DC current component.
摘要翻译：根据本发明的相位控制电路被配置用于在AC电源和AC负载之间连接。交流电源提供具有多个顺序正和负半周期的交流驱动信号。相位控制电路包括耦合在AC源和AC负载之间的第一和第二功率开关。在正半周期之后，第一个相位延迟后，第一个电源开关导通交流驱动信号的电流。第二电源开关在负半周期内在第二相位延迟之后导通交流驱动信号的电流。反馈平衡电路耦合在AC负载和第一和第二电源开关之间。反馈平衡电路确定AC负载中的直流电流分量，并产生作为直流电流分量的函数的相位延迟校正信号。第一和第二相位延迟中的至少一个被调整为独立于作为相位延迟校正信号的函数的另一相位延迟，以限制直流电流分量。

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