铁路设施。机车车辆。照明荧光灯用直流电子镇流器。
Railway applications - Rolling stock - D. C. supplied electronic ballasts for lighting fluorescent lamps.
广泛用于各种直流电，脉冲，交流降压，高频较大的电流场合，特别适用于各种频型的节能灯和电子镇流器。
Widely used in all kinds of direct current, impulse, AC voltage decreasing and high frequency occasions, especially suitable for all kinds of power-saving lights and electronic ballasts.
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