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(5)保护电路①软启动保护电路。OZ960的④脚(软启动端)外接软启动电容C904,起到软启动定时的作用。OZ960工作后,④脚内电路向④脚外接软启动定时电容C904进行充电,随着C904两端电压的升高,OZ960输出的驱动脉冲控制驱动管向高压变压器提供的能量也逐渐增大。软启动电路的使用,可以防止背光灯初始工作时产生过大的冲击电流。②过压保护电路。OZ960内的过压保护电路可以防止灯管高压变压器次级在非正常情况下产生过高的电压而损坏高压变
(5) protection circuit ① soft-start protection circuit. OZ960 ④ feet (soft-start) external soft-start capacitor C904, play a soft-start timing. OZ960 work, ④ foot circuit to the external soft start timing capacitor C904 ④ charge, with the C904 voltage across the rise, OZ960 output drive pulse control drive tube to the high-voltage transformer energy is also gradually increased. The use of soft-start circuit can prevent the backlight from generating excessive inrush current during initial operation. ② over-voltage protection circuit. OZ960 within the over-voltage protection circuit can prevent the lamp high-voltage transformer secondary under abnormal conditions to produce excessive voltage damage high voltage