4 channel 5a 250v ac/30v dc compatible 40pin relay board for
电源的cpu供电接口,有4pin和8pin两种,提供 12v供电安装在主板上的cpu
figure 4. relay circuit diagram.
12v工作电压,4pin(针),4针风扇上带有pwm智能调速功能,根据负责和温度
diagram of the phase protection relay
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