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1.发明授权
公开(公告)号：US4453109A
公开(公告)日：1984-06-05
申请号：US382511
申请日：1982-05-27
CPC分类号： H01F38/10 , Y10S315/07
摘要： A magnetic transformer switch which switches its primary flux path upon conduction in its secondary and the combination thereof with a fluorescent lamp in which the heater current is reduced upon lamp ignition by reason of the current in the heater winding in the secondary being reduced upon the primary flux path being switched. A unique construction minimizes both electromagnetic interference and induction losses.
摘要翻译： 一种磁性变压器开关，其主要通路在其次级导通时切换其主要通量及其与荧光灯的组合，其中在灯点火时加热器电流由于次级中的加热器绕组中的电流而减小而减小 通路正在切换。 独特的结构使电磁干扰和感应损耗最小化。
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2.发明授权
公开(公告)号：US4701671A
公开(公告)日：1987-10-20
申请号：US894375
申请日：1986-08-06
IPC分类号： H05B41/28 , H05B41/298
CPC分类号： H05B41/2988 , H05B41/28 , Y10S315/07
摘要： A current fed high frequency oscillator-inverter ballast circuit includes a parallel resonant tank circuit for driving a pair of series connected discharge lamps via a series ballast capacitor. A regenerative power supply switches on when a fluctuating main DC supply voltage drops below a given level thereby providing a constant level auxiliary DC supply voltage to the oscillator inverter to maintain oscillation and lamp operation. When the main DC supply voltage exceeds said given level, the regenerative power supply switches out. The oscillation frequency is f.sub.2 during operation of the main supply and automatically switches to a frequency f.sub.1 when the regenerative power supply takes over. The frequency shift is automatic during each half cycle of a 60 Hz AC supply and is in a direction so as to maintain lamp current relatively constant. A novel high frequency leakage transformer may be provided to couple the high frequency inverter to the discharge lamp load to provide both a current limiting (ballast) action and automatic control of the lamp heater current to maintain high efficiency operation.
摘要翻译： 电流馈送的高频振荡器 - 逆变器镇流器电路包括用于通过串联镇流电容器驱动一对串联放电灯的并联谐振回路。 当主DC电源电压波动低于给定值时，再生电源接通，从而向振荡器逆变器提供恒定电平的辅助直流电源电压，以保持振荡和灯的工作。 当主直流电源电压超过给定电平时，再生电源断开。 在主电源运行期间振荡频率为f2，再生电源接管时自动切换到频率f1。 频率偏移在60Hz交流电源的每个半周期内是自动的，并且处于使灯电流相对恒定的方向上。 可以提供一种新颖的高频泄漏变压器来将高频逆变器耦合到放电灯负载，以提供限流（镇流）动作和灯加热器电流的自动控制以保持高效率的操作。
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公开(公告)号：US4560908A
公开(公告)日：1985-12-24
申请号：US382734
申请日：1982-05-27
IPC分类号： H02M7/537 , H05B41/24 , H05B41/28 , H05B41/298 , H05B37/00
CPC分类号： H05B41/28 , H05B41/2988 , Y10S315/07
摘要： A current fed high frequency oscillator-inverter ballast circuit includes a parallel resonant tank circuit for driving a pair of series connected discharge lamps via a series ballast capacitor. A regenerative power supply switches on when a fluctuating main DC supply voltage drops below a given level thereby providing a constant level auxiliary DC supply voltage to the oscillator inverter to maintain oscillation and lamp operation. When the main DC supply voltage exceeds said given level, the regenerative power supply switches out. The oscillation frequency is f.sub.2 during operation of the main supply and automatically switches to a frequency f.sub.1 when the regenerative power supply takes over. The frequency shift is automatic during each half cycle of a 60 Hz AC supply and is in a direction so as to maintain lamp current relatively constant. A novel high frequency leakage transformer may be provided to couple the high frequency inverter to the discharge lamp load to provide both a current limiting (ballast) action and automatic control of the lamp heater current to maintain high efficiency operation.
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