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开始
1
正常
2
共振
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电子学手册/电路/RLC串联总结
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来自维基教科书,开放的书籍,开放的世界
<
电子学手册
|
电路
正常
[
编辑
|
编辑源代码
]
RL 和 RC 具有相同的特征
一阶微分方程的形式为
d
d
t
f
(
t
)
+
1
T
=
0
{\displaystyle {\frac {d}{dt}}f(t)+{\frac {1}{T}}=0}
它只有一个实根,形式为
f
(
t
)
=
A
e
(
−
t
T
)
{\displaystyle f(t)=Ae^{(}-{\frac {t}{T}})}
A
=
e
c
{\displaystyle A=e^{c}}
LC 和 RLC 具有相同的特征
二阶微分方程的形式为
d
2
d
t
2
f
(
t
)
+
α
d
d
t
f
(
t
)
+
β
=
0
{\displaystyle {\frac {d^{2}}{dt^{2}}}f(t)+\alpha {\frac {d}{dt}}f(t)+\beta =0}
它只有一个实根,形式为
f
(
t
)
=
A
(
e
ω
t
+
e
−
ω
t
)
{\displaystyle f(t)=A(e^{\omega }t+e^{-}\omega t)}
A
=
e
α
t
{\displaystyle A=e^{\alpha }t}
ω
=
α
2
−
β
2
{\displaystyle \omega ={\sqrt {\alpha ^{2}-\beta ^{2}}}}
共振
[
编辑
|
编辑源代码
]
在共振时
LC 会产生频率为 的驻波正弦波振荡
ω
=
1
L
C
{\displaystyle \omega ={\sqrt {\frac {1}{LC}}}}
RLC 会充当共振调谐的选通带通滤波器
ω
=
1
L
C
a
t
I
=
V
R
{\displaystyle \omega ={\sqrt {\frac {1}{LC}}}atI={\frac {V}{R}}}
δ
ω
=
ω
2
−
ω
1
a
t
I
=
V
2
R
{\displaystyle \delta \omega =\omega _{2}-\omega _{1}atI={\frac {V}{2R}}}
类别
:
书籍: 电子学手册
华夏公益教科书