Applent Instruments AT824, Руководство пользователя, Страница: 13 / 52

13 Overview
2.2.2 Equivalent Circuit
Serial(Subscript s),Parallel(Subscript p)
。。
Table 2-1 Equivalent Circuit
Circuit Dissipation Factor D Conversion
L
Lp
Rp
D=2 π FLp/Rp=1/Q
Ls=Lp/(1+D
2
)
Rs=RpD
2
/(1+
D
2
)
Lp Rp
D=Rs/2 π FLs=1/Q
Lp=(1+D
2
)Ls
Rp=(1+D
2
)Rs
/D
2
C
Cp
Rp
D=1/2 π FCpRp=1/Q
Cs=(1+D
2
)Cp
Rs=RpD
2
/(1+
D
2
)
Cs Rs
D=2 π FCsRs=1/Q
Cp=Cs/(1+D
2
)
Rp=Rs(1+D
2
)
/D
2
Q=Xs/Rs,D=Rs/Xs,Xs=1/2πFCs=2πFLs
Tips
Typically, for low impedance components (such as high-value
capacitance and capacitance and low inductance), use the
series equivalent circuit. Vice versa, use the parallel equivalent
circuit for the high impedance components (low capacitance
and high value of inductance).
Also take the actual usage of the component into
consideration, such as for power supply filtering capacitor
series equivalent circuit for the LC oscillator circuit, use the
parallel equivalent circuit.
2.2.3 Range
Auto and Hold range. Total 5 Ranges.
2.2.4 Measurement Speed
Fast: 4 readers per second.
Slow: 1.5 readers per second