GW Instek LCR-8101 (Replaced by LCR-8101G) - Manual (Page 45)

BASIC MEASUREMENT
45
Quality factor (Q) and Dissipation factor (D)
Background Both Quality factor and its reciprocal, Dissipation
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)
Display Range 0.01 ~ 9999.9 0.00001 ~ 1000
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     