Does Oscillation Is Basic Thing For Generate Various Signal Which Is Required

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Chapter 3 : Literature Review Oscillation is basic thing for generate various signal which is required in Function generator. 3.1 Oscillation : 3.1.1 Type of Oscillators Based on Nature Sinusoidal – RC phase shift oscillator, Wien Bridge,Hartley,Colpitts and clap . Non Sinusoidal – Multivibrators and UJT relaxation oscillators . 3.1.2 Type of Oscillators Based on Component RC Oscillators – Phase shift Oscillator , Wien Bridge Oscillator , UJT relaxation Oscillator . LC Oscillators – Hartley Oscillator , Colpitts Oscillator , Clapp Oscillator . 3.1.3 Type of Oscillators Based on Frequency Low Frequency - RC phase shift oscillator, Wien Bridge . High Frequency - Hartley Oscillator , Colpitts Oscillator , Clapp Oscillator Crystal Oscillator , Tuned Oscillator . 3.2 Basic circuits useful in Function generator Various Basic circuits like multi vibrator, integrator,differentiator,comparator are useful in simple function generator . Fig 6 Basic Block Diagram for Function Generator 3.2.1. Astable Multivibrator The astable multivibrator produces a rectangular waveform at the output and requires no input signal. So this circuit use in square wave generation . Fig 7 Astable Multivibrator Firstly lets assume that the capacitor is fully discharged and the output of the op-amp is saturated at the positive supply rail. The capacitor, C starts to charge up from the output voltage, Vout through resistor, R at a rate

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