Linear Integrated Circuits

5

Oscillators and Waveform Generators

Objectives

To understand the working of waveform generators and oscillator circuits:

• Function generator IC XR 2206
• Oscillator circuits using operational amplifier to generate sine wave, ramp voltage, triangular wave and square waves
  • Low frequency oscillators (RC Oscillators) such as RC phase shift oscillator and Wien Bridge oscillator circuits using Operational amplifier as active device
  • High frequency oscillators (LC Oscillators) such as Colpitts oscillator, Hartley oscillator and Crystal Oscillator circuits using Operational amplifier as active device.
• Quadrature oscillator
• Voltage controlled oscillator circuit

5.1 INTRODUCTION

Function generators are electronic test equipments, which are used to ...