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实用新型
CN205596432U 大功率HID的启动电路和电子镇流器 有权

大功率HID的启动电路和电子镇流器
摘要：
本实用新型公开了一种大功率HID的启动电路和电子镇流器，该启动电路包括变反馈系数取样电路，用于HID的分阶段恒流启动，分阶段恒流启动包括第一恒流阶段和第二恒流阶段，第一恒流阶段的电流值为HID稳态工作电流的0.6倍～0.75倍之间，第二恒流阶段的电流值为HID稳态工作电流的1.1倍～1.3倍之间。根据本实用新型HID灯启动电路，有效减少电流环中检测与控制电路的固有延时及检测电压被噪声信号淹没的可能，从而有效防止HID启动时短路电流控制失败致使无限增大而导致HID电子镇流器炸机的故障，有效提高HID电子镇流器的可靠性和使用寿命。
摘要（英）：

The utility model discloses a high -power HID's starting circuit and electronic ballast, this starting circuit is including becoming feedback coefficient sampling circuit for HID's constant current stage by stage starts, stage by stage the constant current start including first constant current stage and second constant current stage, the current value in first constant current stage is between 0.6 times~0.75 times of HID stable -state work electric current, the current value in second constant current stage is between 1.1 times~1.3 times of HID stable -state work electric current. According to the utility model discloses HID lamp starting circuit, effectively reduce detect in the electric current loop with control circuit's inherent delay and the possibility that detection voltage is flooded by noise signal to effectively prevent the trouble that short -circuit current control was failed and is caused unlimited increase and lead to the fried machine of HID electronic ballast when HID started, effectively improve HID electronic ballast's reliability and life.

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