Thursday 21 March 2013
RC impedance or RL admittance
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PROPERTIES OF RC IMPEDANCE OR RL ADMITTANCE
1)Poles and zeros are alternating
2) Poles and zeros are simple and lie on the negative real
axis of the s-plane.
3)The critical frequency nearest to origin is a pole which
indicates a capacitor for RC impedance
4) The critical frequency farthest from origin is a zero which indicates a capacitor for
RC impedance
5)The residues of Z(s) at its poles are all positive and
real
6) The slope of ZRC(σ) is negative and the slope of ZRC(-σ)
is positive
7) ZRC(0)
≥ZRC(∞)
Methods
for realising a RC IMPEDANCE OR RL ADMITTANCE function
1) Foster
form 1
2)
Foster form 2
3) Cauer
form 1
4)
Cauer form 2
FOSTER
FORM 1
It is used to realize impedance function.
FOSTER FORM 2
It is used to realize admittance function.
It is used to realize impedance function.
FOSTER FORM 2
It is used to realize admittance function.
3) CAUER FORM 1
4) CAUER FORM 2
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