solar based lighting system



hay watsup , i m in need of little help i have a project of solar
based lighting system , motin sensors are also incarporated, battery
will b charged by solar energy , if the battery is not charged
properly then it should b charged by the main power supply.first i
have to sense that battery is naot charged properly then i have to
charge it frm main power supply ......i need a help in making these
logic circuits
.



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