5-
20
5-3. Inductors
Inductors, like capacitors, have elliptical Tracker signatures and respond to Tracker 2700's test
signal non-linearly. Also like capacitors, an inductor's reactance (resistance to an AC test signal)
is dependent on the test signal's frequency. Because of the way they are constructed using wire
which has some amount of resistance in it, it is hard to find an inductor with a pure inductance.
An inductor’s Tracker signature will usually be an elliptical pattern with a some slope or tilt to it
due to the resistance of the coil wire.
Inductor Tracker Signatures
The goal of this part is to explore some inductive signatures and to help you understand how
inductor signatures are related to:
• The inductance L µH of the circuit under test
• The frequency F
S
of the test signal
• The voltage V
S
of the test signal
• The internal resistance R
S
of the Tracker 2700
Figure 5-24. Tracker 2700 connected to an Inductor
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