Capacitor three-point sine wave oscillation circuit

Filter 18.432M


Experimental Content:
1. Observe the startup process of the circuit and use an oscilloscope to monitor the behavior during start-up.
2. Measure the oscillation frequency fâ‚€ using the formula:
f₀ = 1 / (2π√(LC₁C₂/(C₁ + C₂)))
Alternatively, you can calculate it by measuring the period T of the output waveform:
fâ‚€ = 1 / T
In this experiment, the measured period was approximately T ≈ 44.64 μs, which gives a calculated frequency of:
f₀ ≈ 22.42 kHz
The theoretical value based on component values was:
fâ‚€ = 22.52 kHz
The small difference between the measured and calculated values could be due to component tolerances or measurement inaccuracies. This experiment helps in understanding the relationship between capacitance, inductance, and the resulting oscillation frequency in an LC circuit.

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