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废旧启辉器,不能随便扔掉。下面几个小实验,也许能提供一点参考。 1 热涨冷缩实验 (1)选一氖泡完好透明的启辉器,去掉外壳电容和接线柱,只留氖泡和引线,将实验室照明日光灯启辉器去掉,用长导线将原接启辉器的导线引出接至氖泡上。实验时,将氖泡放置于投影仪上,调整投影仪和氖泡,使屏幕上能清晰地看见氖泡的两个触片为止,接通电源,全班学生可以清楚地看见屏幕上的双金属片投影因受热膨胀与静片接触,待日光灯点亮后双金属片由
Waste starters cannot be easily thrown away. The following small experiments may provide a little reference. 1 Heat expansion and cold shrinkage experiment (1) Select a clear transparent starter, remove the outer shell capacitor and terminal, leaving only the bubbles and leads, remove the fluorescent lamp starter from the laboratory, and use the long wire to connect the original The wire of the starter leads out to the blister bubble. During the experiment, the blister was placed on the projector, the projector and the blister bubble were adjusted so that the two contacts on the blister could be clearly seen on the screen, and the power was turned on. The entire class could clearly see the double on the screen. The projection of the metal sheet is in contact with the static sheet due to thermal expansion. When the fluorescent lamp is lit, the bimetal is