GW Instek LCR Series - Impedance (Z) and Admittance (Y)

APPENDIX
239
Impedance (Z) and Admittance (Y)
The impedance covers oppositions in AC circuits including
resistance, inductance, and capacitance and is measured in units of
Ohm (Ω).
In electrical engineering, admittance covers both conductance and
susceptance and is the reciprocal of impedance. It is measured in
units of Siemens (S).
Impedance (Z):
Relevant Equations：
 
 




sin
cos
1
22
22
ZX
ZR
XR
RX
Z
XRZ
C
j
RLjRjXRZ
YI
E
Z
s
s
p
s
s






