Bank rumusBank rumus
XXLL = = ωωLL
XXCC = 1/ = 1/ωωCCLXL ω=
C
1XC ω
=LjZL ω=
C
jZdan
C
1Xdengan
IZIjXIC
jI
Cj
1V
CC
CCCCCCC
ω−=
ω=
==ω
−=ω
=
LjZdanLX:dengan
IZIjXILjV
LL
LLLLLL
ω=ω===ω=
CC VCjI ω=
dt
diLv =
Ω
900
t
v, i
i (t)
v (t)
900
t
v, i
i (t)
v (t)
Bank gambar
vS
v1
R vR
S
S
Rangkaian Kapasitor ParalelRangkaian Kapasitor Paralel
BELUM SAATNYA
RC
RA RB
A
BC
R2
R1
R3
A
BC
Analogi Rangkaian Segitiga dan BintangAnalogi Rangkaian Segitiga dan Bintang
1
313221C R
RRRRRRR
++=
3
313221B R
RRRRRRR
++=
RC
RA RB
A
BCR2
R1
R3
A
BC
CBA
BA1 RRR
RRR
++=
CBA
CB2 RRR
RRR
++=
CBA
AC3 RRR
RRR
++=
2
313221A R
RRRRRRR
++=
SEGITIGA
BINTANG
BINTANG
SEGITIGA
Impedance vs. FrequencyThe magnitude of the impedance is given by
2
22C
2T C f 2
1 R X R Z Magnitude
π+=+=
•The capacitive reactance XC varies inversely with frequency f.
•When the frequency f increases, the Xc will decreases and thus the
magnitude of the total impedance ZT also decreases.
•When the frequency f decreases , the Xc will increases and thus the
magnitude of the total impedance ZT also increases. •In an RC circuit, the impedance Z is inversely dependent of frequency.
π=
π=
=θ
RC f2
1tan-
RfC2
1 tan-
R
X tan - 1-1-C1-
Phase angle vs. FrequencyIn general the phase angle for RC circuit is given by
•When the frequency f increases, the Xc become smaller and thus the phase angle
decreases. •As the frequency increases, XC decreases, Z decreases, and the phase angle θ
decreases. Each value of frequency can be visualized as forming a different impedance triangle.•In an RC circuit, the phase angle θ is inversely dependent of frequency.
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