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XG500MA X线机在国内的拥有量较大)我院就有两台。在维修中我们遇到过一次因振荡器中可控硅3CTIKF触发电流太小,致使不停振引起的主可控硅一直导通,曝光不受时间控制的极危险的故障。这种由于振荡电路不能停振或
The XG500MA X-ray machine has a large number of domestic ownership. There are two in our hospital. In the maintenance, we encountered a very dangerous fault in which the main thyristor caused by the non-stopping of the thyristor 3CTIKF in the oscillator is too low, and the exposure is not controlled by time. This kind of oscillation circuit cannot stop vibration or