Hướng dẫn sử dụng, Tin tức
Cách đo điện áp và dòng điện một chiều DC
Bạn có đồng hồ vạn năng nhưng không biết cách đo dòng điện một chiều hoặc điện áp một chiều. Hãy để chúng tôi hướng dẫn cách đo điện áp và dòng điện một chiều DC cho bạn nhé. Mời đọc.
Cách đo điện áp bằng đồng hồ vạn năng
Nguồn 9V DC được sử dụng để cấp nguồn cho mạch. Đèn LED sẽ phát sáng ngay khi chúng ta kết nối dây với nguồn điện. Hãy chắc chắn rằng tất cả các kết nối chặt chẽ. Nếu đèn LED không phát sáng sau khi kết nối nguồn, thì hãy kiểm tra kết nối và đèn LED.
LED để kiểm tra điện áp
Bước 1: Kết nối các thử nghiệm dẫn đến đồng hồ vạn năng.
Bước 2: Xoay núm xoay sang đoạn điện áp DV trong đồng hồ vạn năng ở 40DCV.
Bước 3: Kết nối các đầu dò trong mạch theo cực tính
Bước 4: Bật nguồn vạn năng.
Bước 5: Lưu ý đọc.
Đồng hồ vạn năng sẽ hiển thị điện áp trên toàn mạch. Ví dụ điện áp trên mạch này là 6,84V
Cách đo dòng điện một chiều bằng đồng hồ vạn năng
Đồng hồ vạn năng có quy trình khác nhau để đo dòng điện. Dòng điện có thể được đo trong phạm vi của cối xay (tối đa 400mA) đến Ampe (tối đa 10A) như trong hình trên.
LED để đo dòng điện
Đồng hồ vạn năng hoạt động như một ampe kế khi đo dòng điện
Bước 1: Xoay núm trên phần DCA.
Bước2: Chọn xếp hạng hiện tại. Đồng hồ sẽ hiển thị dòng điện trong cả hai đánh giá.
Bước 3: Kết nối các thử nghiệm dẫn đến cài đặt đo dòng điện.
Bước 4: BẬT vạn năng.
Bước 5: Đồng hồ vạn năng sẽ hiển thị dòng điện trong mạch hiển thị như trong hình bên dưới.
Như được hiển thị, 0,4 mA dòng điện chảy vào ciruit.
Như vậy bạn đã biết cách đo dòng điện một chiều DC rồi phải không. Chúc các bạn thành công.
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