This article introduces the gas discharge lamps, such as fluorescence lamp, high pressure sodium lamp and metal halide lamp, and their basic requirements to the electronic ballast.
介绍了荧光灯、高压钠灯以及金属卤化物灯等气体放电灯和其对电子镇流器的基本要求。
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In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.