BASIC MEASUREMENT
39
Series/Parallel circuit models
Background
For measuring AC Resistance, Capacitance,
Reactance, Inductance, and Susceptance, series and
parallel equivalent circuit models are available.
Select the model according to the component
value.
Capacitance (C) Series diagram
Parallel diagram
Series formula
2
1
D
C
C
P
S
D=dissipation factor
Parallel formula
2
1
D
C
C
S
P
D=dissipation factor
When to use Series (C
S
)
Large capacitance:
Reactance (X
C
) < 1kΩ
Note:
fC
X
C
2
1
When to use Parallel (C
P
)
Small capacitance:
Reactance (X
C
) > 1kΩ
Note:
fC
X
C
2
1
Inductance (L)
Series diagram
Parallel diagram
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