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延时开关电路

@mo_sky
1 year ago
https://everycircuit.com/circuit/5307824804200448
当三级管的放大效应达到一定数值时,LED的发光会产生自激现象。让其在断电后仍能持续维持一定时间的发光现象,直至最后熄灭。如果再在电路中接入一个电容将大大延长LED的光亮时长。
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