有一信号源,内阻为60Ω,为使负载获得最大功率,在电源与负载之间接匹配变压器,该变压器的变比为2:1,则负载阻抗应为 ( )。
发布时间:2024-09-21
A.30Ω
B.20Ω
C.15Ω
D.10Ω
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