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
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http://www.360doc.com/content/14/0629/15/12109864_390733811.shtml
6 {" l: T! {1 Z9 c+ Ihttp://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
僅供參考
8 a- X1 p; h# c; F0 Q/ H' H# Chttp://210.60.110.11/reading/wp-content/uploads/2013/01/m1020331-16.pdf
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9 {) n* o" E1 K* V4 ~* T, Y厉害！