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Hộp nguồn DC.
Linh kiện:
Diode 1N4007
Biến áp 1A, 12V (có thể mua rời hoặc dùng adapter sẵn có).
Tụ nguồn 2200u, 50V, tụ 470u-25V,
Trở 1kx4, 470 (thay=540), biến trở 10K(để 5K)
Trans: C1815x2, DB880 (thay = TIP 122)(có thể = DB482 hay TIP 12*?)
2 led green, red
...
Tất cả mua tại icvn.com.vn

Next Proj: Auto cut-off 12V(5V, 9V) Battery charger.
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