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If you don’t have an LCR meter in your lab or you want to demonstrate the behavior of capacitors and inductors under sinusoidal stimulus, an oscilloscope and a function generator can help you to do a simple, transparent impedance measurement. You can expect capacitance and inductance values with 3%–6% uncertainty.
The main difference between the inductive and the capacitive case is the phase 𝜑. In the inductive case, the phase is positive whereas the capacitive impedance has a negative phase.
8 Μαΐ 2011 · Measuring the input capacitance of an op amp is not trivial, especially if the value is only a few picofarads. Such low values also present difficulties in screening the op amps during production testing. This design idea explains how to accurately determine the input capacitance for any op amp.
17 Ιαν 2019 · At LC series resonant frequency, you have a voltage divider between function generator's \$ R_{internal} \$ and test-inductor's internal resistance. The dip amplitude oscilloscope voltage allows a calculation of inductor's resistance.
You need to measure inductance but you don't have any multimeter to do that or not even an osciloscope to observe the signal. Well here we are going to build a very cheap and easy inductance meter using the Arduino microcontroller.
capacitance between every single turn of the coil begins to take effect and also the inductance more and more blocks the signal. At the resonance point there is some kind of balance between capacitive and inductive vectors. It is close to the point where the phase angle ɸ is zero degrees.
to measuring inductance, capacitance and impedance, it is not always easy to find an LCR meter. LCR meters operate by applying an AC voltage to the device under test (DUT) and measuring the resulting current, both in terms of amplitude and phase relative to the AC voltage signal. A capacitive impedance will have
