Hệ thống đèn tín hiệu gồm các loại đèn: Đèn biển số, đèn phanh, đèn đậu xe, đèn kích thớc, đèn hiệu báo rẽ, đèn xe lùi . sau đây chúng ta sẽ tìm hiểu hoạt động của mạch đèn báo rẽ và đèn
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