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(一)原理及电路分析当开关K闭合后,中间继电器J_2处于吸合状态,此时牵引磁铁J_3由于J_2的常开接点导通而我厂检验科化验室在毛主席无产阶级革命路线的指引下,坚持以阶级斗争为纲,大搞技术革新,土洋结合实现了化验用氧气开闭自动化,经过几个月的生产试验和多次修改,现已初步成型,并在生产实践中收到了一定效果。现在化验工只要把钩轮装在氧气瓶上,接上牵引磁铁电源就可以操作了,储气筒中的氧气可以自动供给化验用 (见图1)。
(A) principle and circuit analysis When the switch K is closed, the intermediate relay J_2 in the pull state, when the traction magnet J_3 due to the normally open J_2 junction is conductive and I Laboratory Laboratory in the guidelines of Chairman Mao’s proletarian revolutionary line , Adhere to the class struggle as the key link, vigorously promote technological innovation, combined with the realization of the laboratory with the oxygen open and close automation, after several months of production testing and multiple modifications, is now the initial shape, and received in the production practice A certain effect. Now laboratory technicians just hook the hook wheel on the oxygen bottle, connected to the traction magnet power can be operated, the oxygen in the gas cylinder can be automatically supplied for laboratory use (see Figure 1).