railway RRB JE (CBT I + CBT II) Mock Test 2024 Analog Electronics Oscillators and Feedback Amplifier Types of Oscillators
Which one of the following is correct in the feedback circuit, having three resistance and capacitance elements with conditions as R1 = R2 = R3 = R̅ and C1 = C2 = C3 = C̅ for phase-shift oscillator ?
1
\(\rm f = \frac{0.065}{\overline R \ \overline C}\)
2
\(\rm f = \frac{0.078}{\overline R \ \overline C}\)
3
\(\rm f = \frac{0.045}{\overline R \ \overline C}\)
4
\(\rm f = \frac{0.038}{\overline R \ \overline C}\)