Oscillators · Analog Circuits · GATE ECE

Consider the oscillator circuit shown in the figure. The function of the network (shown in dotted lines) consisting of the 100 k $$\Omega$$ resistor in series with the two diodes connected back- to is to:

The value of 'C' required for a sinusoidal oscillation of frequency 1 KHz in the circuit of the figure is

The oscillator circuit shown in the figure has an ideal inverting Amplifier. It's frequency of Oscillation (in Hz) is

The circuit in the figure employs positive Feedback and is intended to generate sinusoidal oscillation. If at a frequency f$$_0$$, B(f)= $${{\Delta {V_f}(f)} \over {{V_0}(f)}} = {1 \over 6}\,\,\angle {0^0}$$ then to sustain oscillation at this frequency.

The Oscillator circuit shown in the figure is

Value of R in the oscillator shown in the given figure. So chosen that it just oscillates at an angular frequencies of' "$$\omega $$". The value of "$$\omega $$" and the required value of R will respectively be

Match the following.

GROUP-1
(A) Hartley
(B) Wein-bridge
(C) Crystal

GROUP-2
(1) Low frequency oscillator
(2) High frequency oscillator
(3) Stable frequency oscillator
(4) Relaxation oscillator
(5) Nagative Resistance oscillator

Find the value of $${R^1}$$ in the circuit of fig. For generating sinusoidal Oscillations. Find the frequency of oscillations.