In this video, we are going to use the Peak Tech 1404 Oscilloscope to determine the resonant frequency in an RLC circuit. Next, we will visually observe the resonant frequency in the circuit with the help of the Lissajous curve.
Now, what is the resonant frequency? When AC current enters this circuit, there is a specific frequency at which the circuit responds the most. This frequency, called resonance, is a key concept in electronics and wave systems and plays an important role in many applications, from filters to radio circuits.
In DC or low-frequency current, the inductor allows current to pass, that is, it is short-circuited. But if alternating current enters the inductor, the inductor starts to resist. This is the inductive reactance, which is represented by xl.
The capacitor does not allow DC voltage to pass, but in alternating current, as the frequency increases, the resistance to the passage of current decreases. This is the capacitive reactance, which is represented by xC.
In this video, we will practically implement these two concepts using an oscilloscope.
Link to purchase oscilloscope 1404:
https://www.peaktech.de/uk/PeakTech-P...
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00:00 Concept of resonance and Lissajous curve
03:55 Concept of RLC resonant circuit (in series)
04:35 Finding the value of the inductor using an LCR meter
06:14 Concept of inductive reactance
07:15 Concept of capacitive reactance
08:54 Calculation of resonant frequency
09:27 Practical demonstration of resonant frequency in an RLC circuit