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串聯諧振電路 - Coggle Diagram
串聯諧振電路
電流
I0 = Z0 \ V = ∞(無限大)
f = f0,XL0 = XC0;Z0 = 0,I0 = ∞
f ↑(f > f0)、XL ↑、XC ↓(XL > XC)、Z ↑、I ↓
f ↓(f < f0)、XL ↓、XC ↑(XL < XC)、Z ↑、I ↓
電路
,I = IL = IC
0 < f < f0 時XL<XC、VL < VC,電壓滯後電流(電容性)
f0 < f < ∞ 時XL>XC、VL>VC,電壓超前電流(電感性)
f = f0 時,XL0 = XC0,Z0 = 0,I0 = ∞,為諧振電路
阻抗
L、C 串聯電路總阻抗 Z
Z = XL + XC = jXL - jXC = j(ωL - 1ωC)
諧振時 XL0 = XC0 ⇒ Z0 = 0
頻率
2πf0L = 2πf0C \ 1
XL0 = XC0
f0= 2π 根號LC \ 1 ,ω0= 根號LC \ 1
XL = ωL = 2πfL
f ↑ => XL ↑
XC = ωC \ 1 = 2πfC \ 1
f ↑ => XC ↓