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一、问题提出在医用诊断 X 线机中,大多使用铁谐振式交流稳压器来作为 X线管灯丝加热的稳压源,以证 X 线管电流不受电源电压波动的影响。尽管这种稳压器的输出电压对供电频率的变化比较敏感。但是,由于它具有结构简单,运行可靠的优点,因此在国内外的 X 线诊断机。尤其是在中小型机组中,还是被广泛地采用。同时,正因为它存在频敏效应这一缺点,所以 X 线诊断机便对电源频率波动提出了限制的要求:
First, the problem raised In the medical diagnosis of X-ray machines, most of the use of iron resonant AC voltage regulator as the X-ray tube filament heating of the regulator to prove X-tube current from the power supply voltage fluctuations. Although the output voltage of this regulator is sensitive to changes in supply frequency. However, because of its simple structure and reliable operation, X-ray diagnostic machine is widely used in China and abroad. Especially in small and medium-sized units, or is widely used. At the same time, because of its shortcoming of frequency-sensitive effect, the X-ray diagnostic machine has put forward the limit requirement on the power frequency fluctuation: