Why does the charger have to be connected to the battery to have output? Analyzing Triac Circuits

Why does the charger have to be connected to the battery to have output? Let's analyze the one-way thyristor circuit [80 Xiaochen]
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[@runteam6355]

不需要電瓶防反接時SCR的AK腳直接短接應該可以吧 ?

[@narovv]

谢谢了。解释很清楚。

[@fs2820]

学会了。

[@USA52228]

我学不会😄😄

[@XiaoChenOfficial]

开心，学会了就好

[@lww3988]

@@USA52228 天下無難事，只怕有心人，跟進陳老師的步伐走，放心，一定能學會的

[@user-uq6mv5hr7g]

可以解釋一下DB2 二極體嗎

[@XiaoChenOfficial]

有空的话分享干货

[@lww3988]

@@XiaoChenOfficial 請問陳老師一下，台灣粉絲真的不曉得干貨的意思？就像有師傅說「翻車」，後來才慢慢知道其含意了

[@user-uq6mv5hr7g]

所以干貨是？

[@jiaxingwang2175]

@@user-uq6mv5hr7g 没有水分的货🙃

[@xuejunwu254]

导通充电以后，DB2还继续有电流经过BT151再经过0.5欧姆到地吗？电容呢？谢谢

[@alanlinx]

沒理解錯的話，觸發後DB2就無作用了， 電流直接經過電瓶負極,流經BT151和0.5歐電阻到地，就不會流過三極管了

[@narovv]

电瓶内阻可看作0，则三极管be两端电位相同，三极管断开，DB2就没电流