Consider the Schmitt trigger oscillator in Figure 15.35. The circuit parameters are (R_{1}=10 mathrm{k} Omega, R_{2}=20 mathrm{k}

Question:

Consider the Schmitt trigger oscillator in Figure 15.35. The circuit parameters are $R_{1}=10 \mathrm{k} \Omega, R_{2}=20 \mathrm{k} \Omega, R_{X}=40 \mathrm{k} \Omega$, and $C_{X}=0.02 \mu \mathrm{F}$. The saturated output voltages are $\pm 5 \mathrm{~V}$.

(a) Write the expressions for $v_{X}$ as a function of time assuming that $v_{O}$ has switched to its high state at $t=0$.

(b) Determine the frequency of oscillation and the duty cycle.

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