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电视差转机自动关机延时器是由一只10安交流接触器CJ,一只适用于交流50Hz,500伏以下,延时0～2小时的JS11型时间继电器JS(浙江瑞安电器一厂生产),一只交流闸刀开关(10～15 A)K_1,一只按钮开关(3A)K_2和一只指示灯ZD,如图所示。其中:JS-1为JS的一对常闭接点,延时后断开;CJ-1～3为CJ的三对常开接点。当合上K_1而未按K_2时,交流220伏从输入端通过K_1导通直接送到输出端,JS和CJ都处于断电状态,指示灯不亮。当需要延时断电时先按动K_2再断开K_1。此时CJ通
TV transfer machine automatic shutdown delay switch is a 10 amp AC contactor CJ, a suitable for AC 50Hz, 500 V delay, delay 0 to 2 hours JS11 time relay JS (Zhejiang Ryan Electric Factory production) , A AC knife switch (10 ~ 15 A) K_1, a push button switch (3A) K_2 and a light indicator ZD, as shown in the figure. JS-1 is a pair of normally closed contacts of JS, which is disconnected after delay; CJ-1 ~ 3 are three pairs of normally open contacts of CJ. When K_1 is closed and K_2 is not pressed, 220 VAC is supplied from the input terminal through K_1 to the output terminal. Both JS and CJ are off and the indicator is off. When you need to delay the power off, press K_2 and then disconnect K_1. CJ at this time