### Oscillators Objectives Part 01

**01 .** **Crystal controlled oscillator** is most stable oscillator.

**02 .** ** f=1/2pi sqrt RC **for Wein Bridge Oscillator Frequency 3.Barkhausen criterion for oscillator stability is

**0 3 .** Barkhausen criterion for oscillator stability is

**Ạẞ=1**

** 04 . **A Hartley Oscillator Circuit uses for T**apped inductor for inductive feedback **

**05 .** Rc phase shift Oscillator will not produce any Oscillation Until and unless Voltage gain of its internal Amplifier is** around 3**

** 06 .** for Good stability tuned circuit should have **high Q **

**07 .** varactor in voltage-controlled* *oscillator needs **Reverse Dc control Voltage**

**08 . **The phase Comparator in PLL circuit is used to Provide **Dc Control Voltage**

09.** Crystal control Oscillator** can be expected to give highest Q factor

**10 . ** Beat frequency oscillator consists of **Two oscillator.**

**11 .** Blocking Oscillator are used as** High Impedance switches and frequency divider.**

**12 . ** In a practical Oscillator AB is **slightly greater than 1.**

**13 . ** In Case of RC a phase shift Oscillator, the Frequency oscillation is f**=1/2*pi sqrt RC**

**14 . **Oscillator Circuit** can be operated in class A condition for better wave shape.**

**15 .** In Circuit shown feedback to Q1 through **C1** fig 17

**16 .** ** free running** applies to mutlivibrator circuit.

**17 .** A phase shift Oscillator Consist of number of **RC Circuits.**

**18 .** The loop gain in phase shift Oscillator is **360 degree.**

**19 . ** ** f=1/2*pi sqrt LC** Hartley oscillator.

**20 . **Monostable Multivibrator Can be used to Generate** sweep.**