怎样用555芯片制作一个LED延迟3分钟熄灭的电路，求原理图

Jano

开关按下时LED为发光状态，开关断开后LED延迟3分钟熄灭

jacklee_47pn

僅供參考
1 Y! }$ Z2 K: L* dhttp://210.60.110.11/reading/wp- ... /01/m1020331-16.pdf
http://www.360doc.com/content/14/0629/15/12109864_390733898.shtml
! B* t" x( K/ z; ?http://www.360doc.com/content/14/0629/15/12109864_390733811.shtml
" [. _- ~: u  N* p/ p" O& P/ j* shttp://www.360doc.com/content/14/0629/15/12109864_390733736.shtml

松哥无敌

厉害.......

Jano

jacklee_47pn 发表于 2015-4-30 09:51
& Z& `& c7 i- B" X) d1 T僅供參考
http://210.60.110.11/reading/wp-content/uploads/2013/01/m1020331-16.pdf
http://www.360doc ...

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