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Dieu khien relay bi reset pic la do:khi ON relay thi OK nhung khi ngat dien Relay se tao mot dien ap rat lon o hai dau cuon day va diep ap nay lam cho con PIC bi treo hay bi reset. Co hai cach khac phuc
-Tot nhat la gan diode(gan nguoc) song song voi hai cuc relay de triet tieu dien ap nay
-Gan them mot tu khoang 10-47mF song song voi relay
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