求教高手画一个简单的电路图,有过零检测光耦moc3041(也有moc3023),双向晶闸管BTA16-600B,

2024-10-29 19:14:52
推荐回答(5个)
回答(1):

你确定你的BTA16-600B接法的极性没有错吗?在确认出G极后,确认T1与T2极同样重要!就以你在网上搜的图片为例说明:当你把BTA16-600B的G极接到MOC3023的4脚时,那么第6脚就一定要接到BTA16-600B的T2极,也即经过180Ω再接到T2极,如果你把第6脚接到的是T1极,就算你画的电路图是对的也无法使可控硅BTA16-600B打开的!何况你画的可控硅符号是错误的。
  那个非门只是一个驱动作用而已,如果你的单片机的PWM输出的驱动能力够大的话可以不要这个非门。为了消去不必要的猜疑,最好也把1K改为180Ω。

以下都是用指针式万用表:
判定T2极
G—T1之间无论是加正触发还是负触发,都能使T1与T2之间无方向性导通。G—T1之间正反向电阻都很小。在用Xl档测任意两脚之间的电阻时,只有在G-T1之间呈现低阻,正、反向电阻仅几十欧,而T2-G、T2-T1之间的正、反向电阻均为无穷大。这表明,如果测出某脚和其他两脚都不通,就肯定是T2极。另外,采用TO—220封装的双向可控硅,T2极通常与小散热板连通,据此亦可确定T2极。
区分G极和T1极
   (1)找出T2极之后,首先假定剩下两脚中某一脚为T1极,另一脚为G极。
(2)把黑表笔(万用表的黑表笔为内部电池的+极)接T1极,红表笔(万用表的红表笔为内部电池的-极)接T2极,电阻为无穷大。接着用红表笔尖把T2与G短路,给G极加上负触发信号,电阻值应为十欧左右,证明管子已经导通,导通方向为T1一T2。再将红表笔尖与G极脱开(但仍保持接T2极),若电阻值保持不变,证明管子在触发之后能维持导通状态,那么这时黑表笔接的是T1极,悬空的是G极。如果此时黑表笔接的是G极,把T1极从T2脚脱开,那么T2—G之间是没有这么低的电阻的。

回答(2):

可控硅不导通,可能你把T1和T2接反了,按你画的图,MOC3041的6脚得接T2灯泡接T1才能触发。。。

回答(3):

如果你的灯泡是60W以下,完全可以去掉可控硅。直接用3041控制。(我以前是用的3061,可以直接控制100W灯泡)

回答(4):

你看一下芯片的导通电流(发光二极管的最小电流)还有你单片机输出的电压,电流是多大呀,你算算。

回答(5):

你那1K电阻都接错地方了哦!人家在6脚接的

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