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1. 发明授权

US5128592A 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：US5128592A
公开(公告)日：1992-07-07
申请号：US732483
申请日：1991-07-18
申请人： Thomas E. Dean , Russell G. Greenwood , Sylvan E. Irwin, IV
发明人： Thomas E. Dean , Russell G. Greenwood , Sylvan E. Irwin, IV
IPC分类号： H05B41/295 , H05B41/392
CPC分类号： H05B41/295 , H05B41/3925 , Y10S315/05
摘要： An electronic circuit for receiving input electrical power at a lower frequency and for energizing a load at a higher frequency. The electronic circuit has a rectifier for rectifying the input electrical power received on an input thereof and a pre-regulator for changing the rectified AC voltage provided by the rectifier to a source voltage. The electronic circuit further has a non-resonant inverter for providing electrical power at the high frequency to the load and includes first and second switches and is connected to the pre-regulator and to the load circuit. A logic circuit is responsive to a sensed signal representing only current flowing in the first and second switches for operating the first and second switches. The frequency of current in the load circuit varies for any substantial change in the magnitude of the source voltage, for any change in load impedance, and for any change in a set point value. A device for setting the set point value is connected to the logic circuit. Finally, a reactance circuit is provided and connected in circuit with the load. The peak amplitude of current in the load has a peak value determined by the set point value. The device for setting the set point value can be a replaceable element having a predetermined relationship to the type of load connected to the electronic circuit or to the desired light output level. Also, the device for setting the set point value can be a variable element for selecting the set point value from a range of set point values and thereby changing the peak amplitude of current in the load. The variable element can also be controlled by a signal originating remotely from the logic circuit in the ballast.
摘要翻译：一种电子电路，用于以较低的频率接收输入电力，并以更高的频率给负载供电。电子电路具有整流器，用于对输入端接收的输入电功率进行整流，以及用于将由整流器提供的整流后的交流电压改变为源极电压的预调节器。电子电路还具有非谐振逆变器，用于向负载提供高频电力，并且包括第一和第二开关，并连接到预调节器和负载电路。逻辑电路响应于仅表示在第一和第二开关中流动的电流的感测信号，用于操作第一和第二开关。负载电路中的电流频率随负载阻抗的任何变化以及设定值的任何变化对源电压幅度的任何实质性变化而变化。用于设置设定值的设备连接到逻辑电路。最后，提供电抗电路并与负载电路连接。负载中电流的峰值幅度具有由设定值确定的峰值。用于设定设定点值的装置可以是与连接到电子电路的负载类型或期望的光输出电平具有预定关系的可更换元件。此外，用于设定设定值的装置可以是用于从设定值的范围中选择设定值的变量，从而改变负载中电流的峰值振幅。可变元件也可以通过源自镇流器逻辑电路的远程信号来控制。

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