Gw Instek LCR-821 Digital-Multimeter, DMM, LCR-821 Hoja De Datos
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LCR-821
APPENDIX
129
Impedance (Z) and Admittance (Y = 1/Z) Formula
Background
Impedance measures the total amount of
opposition between two terminals in an AC circuit.
Admittance is the reciprocal of Impedance and
measures how easily the electricity flows in an AC
circuit.
opposition between two terminals in an AC circuit.
Admittance is the reciprocal of Impedance and
measures how easily the electricity flows in an AC
circuit.
Note
Admittance is only shown for its relation to
impedance. Admittance is not measurable with the
LCR-800 series.
impedance. Admittance is not measurable with the
LCR-800 series.
Type
Impedance (Z)
Admittance (Y)
Formula
Y
I
E
Z
1
jX
R
Z
S
C
j
R
L
j
R
2
2
X
R
Z
S
2
2
X
R
RX
Z
P
cos
Z
R
S
sin
Z
X
S
Z
E
I
Y
1
jB
G
Y
P
L
j
G
C
j
G
2
2
B
G
GB
Y
S
2
2
B
G
Y
P
cos
Y
G
P
sin
Y
B
P
LCR-800
User
Manual
130
Quality factor (Q) and Dissipation factor (D) Formula
Background
Both Quality factor and its reciprocal, Dissipation
factor, are used for measuring the rate of energy
dissipation relative to the measurement frequency.
factor, are used for measuring the rate of energy
dissipation relative to the measurement frequency.
Low energy dissipation: high Q, low D
High energy dissipation: low Q, high D
Type
Quality factor (Q)
Dissipation factor (D)
Formula
S
S
S
S
R
C
R
L
Q
1
P
P
P
P
R
C
L
R
D
1
90
tan
1
S
S
S
S
R
C
L
R
D
P
P
P
P
G
L
C
G
Q
1
90
tan