impedance of r/l/c 18-2 prof. seewhy lee. 1. 교류회로의 임피던스와 위상차 2. 저항 3....
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![Page 1: Impedance of R/L/C 18-2 Prof. Seewhy Lee. 1. 교류회로의 임피던스와 위상차 2. 저항 3. 축전기 4. 인덕터](https://reader030.vdocuments.mx/reader030/viewer/2022020718/56649ece5503460f94bdb28d/html5/thumbnails/1.jpg)
Impedance of R/L/C18-2
Prof. Seewhy Lee
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1. 교류회로의 임피던스와 위상차
2. 저항
3. 축전기
4. 인덕터
Agenda
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1. 교류회로의 임피던스와
위상차
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2. 저항
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3. 축전기
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4. 인덕터
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Impedance & Phase Differ-ence
)sin(0 tV
)sin(0 tILoad
0
0
I
VZ Impedance
Large Impedance Small Current
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Impedance of a Resis-tor
)sin(0 tV
R
)sin(0 tR
V
R
VI
)sin()sin( 00 tIt
R
V RZ
1
Ohm’s Law
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Impedance of a Capacitor
)sin(0 tV
C
)sin(0 tCVVCq
)sin()cos( 00 tItCV CZ
1
)cos(0 tCVdt
dqI
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Impedance of a Capacitor
)sin(0 tV
L
dt
dILtV )sin(0
)sin()cos( 00
tIt
L
V LZ
)cos(0 tL
VI
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Capacitor vs. Inductor
CZC
1
Open for DC, Short for Infinte Freq.
LZL
Short for DC, Open for Infinte Freq.
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Transduction of Sound & Image through Microphone & CCD
Modulation (Coding)
Oscillation Circuit
Transmission into Space
Receiving by Resonating Circuit
Demodulation (Decoding)
Transduction of Electrical Signal into Sound and Image
Telecommunication (1898-)
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Thanks for your attention~!!
Prof. Seewhy Lee