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
http://210.60.110.11/reading/wp- ... /01/m1020331-16.pdf
: g! c* W( R: ?% P" j5 p. S' R1 Ghttp://www.360doc.com/content/14/0629/15/12109864_390733898.shtml
http://www.360doc.com/content/14/0629/15/12109864_390733811.shtml
http://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
* U2 M2 s, \: p- Q2 G僅供參考
, I6 i% {% g" R9 whttp://210.60.110.11/reading/wp-content/uploads/2013/01/m1020331-16.pdf
1 G* C. y/ j/ ^9 rhttp://www.360doc ...

厉害！