2.除湿控制电路除湿控制电路由芯片ICl(LM324)、IC2(NE555),开关K1、K2,放大管V1、V2、V5,继电器J1,J2等构成。当需要制冷除湿时,按下开关K1,使IC2的②脚电位为低电平,IC2内的触发器置位翻转,它的③脚输出的电压为高电平。该电压不仅通过R1使D22发光,表明该机进入除湿状态,而且使ICl的⑩脚输入的电压超过⑨脚的参考电压,于是ICl的⑧脚输出高电平电压。 2. Dehumidification control circuit dehumidification control circuit chip ICl (LM324), IC2 (NE555), switches K1, K2, amplifier V1, V2, V5, relays J1, J2 and other components. When the need for cooling and dehumidification, press the switch K1, so that the ② ② IC2 pin potential is low, IC2 flip flip flip set, it’s pin output voltage is high. The voltage not only by R1 to make D22 light, indicating that the machine into the dehumidification state, but also to ICl ⑩ pin input voltage exceeds the reference voltage of ⑨ feet, so ⑧ pin ICl output high voltage.