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我们经过多次实验,找到了一种经济、简便的校准X线机管电流的方法,结果比较满意,现介绍如下。毫安表的指针和动圈的惯性所引起的误差,与仪表指针和动圈的质量及其指针所摆动的角度有关。X线机上的毫安表指针和动圈的质量固定,因而只要使仪表指针摆动的距离减少,误差也就可以相应减小。根据这个道理,将毫安表指针事先调到所需的mA值,在X线开始发生的同时,迅速转接至X线管电流测量回路中,如指针基本不动,说明管电
After many experiments, we found an economical and simple method of calibrating the X-ray tube current with satisfactory results. Millimeter table pointer and dynamic inertia of the error caused by the instrument pointer and moving coil quality and the angle of the pointer swinging. X-ray machine millimeter table pointer and moving coil of fixed quality, so as long as the instrument pointer to reduce the swing distance, the error can be reduced accordingly. According to this principle, the milliampere table pointer in advance to the required mA value, starting in the X-ray at the same time, quickly transferred to the X-tube current measurement circuit, such as the basic pointer does not move, indicating that the power tube