Coupled Oscillators: Part B (Sine input)
By: S. A. Dodds
Physics Department
Rice University
Houston, TX
In this part we will use the function generator to excite the first
oscillator with a sinusoidal wave and measure the response of the
second oscillator. The scope is used to measure the voltage and
hence infer the charge on capacitors Ca and Cb.
Reset the function generator to produce sine waves at a frequency
near the expected resonance frequency. Install the 0.01 uF coupling
capacitor and set the variable capacitor to a convenient dial setting.
(Unfortunately the capacitance and dial setting are not linearly
related.) If you now slowly vary the function generator frequency
through a range around the expected resonance you will notice two
relative maxima in the voltage across Cb. These maxima occur at
frequencies corresponding to w+ and w-.
Using your mouse, click on the instrument controls to adjust them.
|
