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1. 发明授权

US4613797A Flash strobe power supply 失效
标题翻译：闪光灯电源
公开(公告)号：US4613797A
公开(公告)日：1986-09-23
申请号：US635132
申请日：1984-07-27
申请人： Frederick W. Eggers , Paul D. Graham , Bruce E. Heeb
发明人： Frederick W. Eggers , Paul D. Graham , Bruce E. Heeb
IPC分类号： H05B41/32 , H05B41/34 , H05B41/30
CPC分类号： H05B41/34
摘要： A flash strobe power supply adapted for controlling alternately the energization of a pair of flash lamps includes a trigger timing device for generating a series of positive pulses and a series of negative pulses spaced in time from the positive pulses by a predetermined interval. First and second energy storage devices are provided for repeatedly charging incrementally during successive charging cycles and for storing a charge to be applied to respective first and second flash lamps. An inverter oscillator circuit includes a pulse width modulator and a transformer for generating a quasi-squarewave signal whose frequency is greater than the frequency of the positive and negative pulses to control the incremental charging of the energy storage devices. First and second switching devices deliver when conductive the charge stored in the first and second energy storage devices to their respective first and second flash lamps. A first switching means is responsive to the positive pulses of the timing device for rendering it conductive to permit the discharging of the charge stored in the first energy storage device through the first flash lamp. The second switching device is responsive to the negative pulses of the timing device for rendering it conductive to permit the discharging of the charge stored in the second energy storage device through the second flash lamp. Antisaturation circuit responsive to the quasi-squarewave signal prevents saturation of the primary winding of the transformer by disabling of the pulse width modulator which avoids further incremental charging of the first and second storage devices.
摘要翻译：适用于交替地控制一对闪光灯的通电的闪光闪光灯电源包括触发定时装置，用于产生一系列正脉冲和一定时间内与正脉冲间隔预定间隔的负脉冲。提供第一和第二能量存储装置，用于在连续的充电循环期间逐渐重复地进行充电，并存储要施加到相应的第一和第二闪光灯的电荷。逆变器振荡电路包括脉冲宽度调制器和变压器，用于产生频率大于正脉冲和负脉冲的频率的准方波信号，以控制能量存储装置的增量充电。第一和第二开关装置在将存储在第一和第二能量存储装置中的电荷导电到其相应的第一和第二闪光灯时传递。第一开关装置响应定时装置的正脉冲，使其导通以允许通过第一闪光灯对存储在第一储能装置中的电荷进行放电。第二开关装置响应于定时装置的负脉冲，使其导通以允许通过第二闪光灯对存储在第二能量存储装置中的电荷进行放电。响应于准方波信号的抗饱和电路通过禁止脉冲宽度调制器来防止变压器的初级绕组的饱和，从而避免了第一和第二存储装置的进一步增量充电。

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