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我院一台西安二六二厂生产的FJ-2008自动免疫计数器出现故障:有时本底CPM数偏低使机器无法正常工作,同时仪器高压电源发出的高频声音忽高忽低,极不稳定。从电路方框图可知该机高压电源接到仪器的前置
The FJ-2008 automatic immunity counter produced by a Xi’an 262 factory in our hospital failed: sometimes the background CPM is too low to make the machine unable to work, and the high-frequency sound emitted by the instrument’s high-voltage power supply is fluctuating and unstable. . From the circuit block diagram, we can see that the high voltage power supply of the aircraft is connected to the front of the instrument