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1 故障现象 透视状态下mA表指针摇摆不定。2 处理方法 透视状态下,调节透视mA旋钮,发现无论mA选择多少指针均摇摆不定,且增大方向超出mA表量程;减少KV值,故障仍然存在;检查高压电缆及mA测量回路无异常;拆下球管、从窗口观察灯丝及靶面等亦无异常;调整mA到最小位置,测量灯丝初级电压即110端子与100端子之间电压,发现此电压有轻微波动,此电压是由磁饱合稳压器BT_2提供
1 symptoms under the state of perspective mA meter pointer swinging. 2 treatment perspective perspective state, adjust the perspective of the mA knob and found no matter how many pointers mA are swings, and increase the direction of mA table range; reduce the value of KV, the fault persists; check the high-voltage cables and mA measurement circuit without exception; demolition Under the tube, from the window to observe the filament and the target surface is no exception; adjust the mA to the minimum position, measuring the filament primary voltage that is 110 terminals and 100 terminals between the voltage and found that this voltage has a slight fluctuation of the voltage by the magnetic saturation Regulator BT_2 provided