论文部分内容阅读
故障现象：开机后无雾化检查：按常规方法检查，灯丝电压、帘栅级电压、屏极电压均正常；超声换能器部分与主机联接正常；用氛管试验无振荡。初步判断FU－7电子管损坏，更换管子后，按程序开机雾化正常，一段时间雾化消失，经检查新换的电子管已损坏。后换上一个新管，开机后工
Symptoms: No atomization check after starting up: Check according to conventional methods. The filament voltage, screen grid voltage, and panel voltage are all normal. The ultrasound transducer is connected to the host normally. There is no oscillation in the atmosphere tube test. Initially judge FU-7 electron tube damage, after replacing the tube, according to the procedure, the starting atomization is normal, the atomization disappears after a period of time, the electronic tube that has been inspected and changed is damaged. After changing into a new tube, it will start working