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1.怎样使检流计光点清晰冲击法测量磁钢磁参数的过程,主要是观察检流计光点偏转大小的过程。由于光源暗淡和光点指示器的粗阔,所以一般测量时,均需在暗室中进行,时间长了容易使视力疲劳,发生视差。光源的改进:如果将光照设备的灯管适当改大,并将其中的小功率灯泡(一般为10瓦)改用20～30瓦较大功率的灯泡,(可用自耦变压器与次级能通过大电流的变压器作电源,以任意调节亮度)这样,光线就可增亮几倍,在明亮的日光灯下也可操作了。
1. How to make the galvanometer clear point of impact of magnetic method to measure the magnetic parameters of the process, mainly to observe the size of the galvanometer deflection point of the process. Due to dim light and light spot indicator of the rough, so the general measurement, are required to be carried out in the darkroom, a long time easy to make vision fatigue, the occurrence of parallax. Light source improvements: If the lighting equipment appropriate to change the lamp, and one of the low-power light bulbs (usually 10 watts) to 20 to 30 watts of higher power light bulbs (available autotransformers and secondary can pass High-current transformer for power, to arbitrarily adjust the brightness) In this way, the light can be brightened several times, the bright fluorescent lamp can also be operated under.