ghaytweyhtoo

Zero power consumption after single-button delay switch is closed

 
Overview
用在改锂电的万用表自动关机,按一下按键,n导通拉低p管的g极低压接了低,就输出负载,同时电容充电期间维持n管g极的正电压,当电容充满电,g极就是电容负极电压接近接地电平就关闭,加上还有p管1M电阻强制关闭。
 
关闭时间改电容容量大小
水平太菜,根据这张图打板的,本来用ao4606,换成2个sot23的mos管,时间电容跟时间电阻多加了一个焊盘,方便调节
 
 
几个mos管二极管基本用马云家红包薅的,基本没花钱,下了5单都不到1元钱
 
 
装到这个傻充里面挺合适,时间电阻10m 电容470uf 大概刚好三个小时
 
 
参考设计图片
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