Make the ring oscillator above. What is the effect of V₁ and V₂ on the amplitude and frequency of V_out? (Maintain V₂ to be within +/-1V of V₁ during this experiment. Think of reasons for this).

Use the circuit above to detect the envelope of the oscillator output V_out. Vary V₁ and V₂ and see that the output is as expected.

The oscillator amplitude needs to be stabilized to 5V. Drive the amplitude control of the oscillator using the integrated error signal as shown in the circuit above. Choose C_int for stable operation of the circuit. Change the amplitude reference and verify that the circuit works as expected.