20. 齊納(Zener)電壓調整電路如右圖所示,其中齊納二極體之
,若
請問電阻R 值需為多少,才能使齊納二極體在IL = 0 ~ IL(max)之間進行 調節,且IL(max)為何?
(A) R = 25 kΩ,IL(max) = 25 mA
(B) R = 18 kΩ,IL(max) = 20 mA
(C) R = 4.5 kΩ,IL(max) = 20 mA
(D) R = 4.5 kΩ,IL(max) = 15 mA
答案:登入後查看
統計: A(4), B(14), C(44), D(212), E(0) #1917350
統計: A(4), B(14), C(44), D(212), E(0) #1917350