电吹风开关二极管怎么接线?电吹风开关怎么接线?
电吹风开关二极管怎么接线?
1.用一个典型的电吹风电气原理图作参考:
图中一共有2组二极管,其中2个位于开关处,用于电吹风“中档”(中档功率);另外4个组成桥式整流器,为直流电机供电。
2.应该是直接焊接在开关上的2个5408(型号1N5408)二极管,其参数是3A,1000V。
电吹风在“高档”时,220V全波电压加在ABC电热丝上,整机功率为2200W,电流是10A;当开关拨至“中档”时,交流电通过二极管斩波变为110V后流过电热丝,整机功率和电流也变成一半,即1100W和10A,所以2个3A,1000V的二极管并联完全可以胜任。
3.不同功率、不同电路的电吹风,二极管的配置也不尽相同,有些小功率的电吹风配置的是1N5397,参数是1.5A,600V。不过2200W的电吹风已是电吹风功率极限。
吹风机开关是单刀二位三态开关,其中一根电源线接刀,第一掷接热丝,第二掷经二极管接第一掷,第三掷是空位。二极管的作用是削去半个波,使剩下的半波脉动直流相当于220伏的一半,即热丝只有一半的时间通电,达到了无损降压的目的。
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电吹风开关二极管接线:
1、吹风机开关是单刀二位三态开关,其中一根电源线接刀,第一掷接热丝,第二掷经二极管接第一掷,第三掷是空位。
2、二极管的作用是削去半个波,使剩下的半波脉动直流相当于220伏的一半,即热丝只有一半的时间通电,达到了无损降压的目的。
电吹风开关怎么接线?
电吹风开关接线:吹风机开关是单刀二位三态开关,其中一根电源线接刀,第一掷接热丝,第二掷经二极管接第一掷,第三掷是空位。二极管的作用是削去半个波,使剩下的半波脉动直流相当于220伏的一半,即热丝只有一半的时间通电,达到了无损降压的目的。