The Design and Performance Analysis of Wien Bridge Oscillator Using Operational Amplifier

Abstract

Oscillators are essential components that produce a periodic electronic signal, typically a sine wave or square wave. Oscillators convert DC signal to periodic AC signals which can be used to set frequency, be used for audio applications. An electronic oscillator is generally a major part of electrical, electronic and communications circuits and systems. In this paper is presented oscillator with a real single-pole operational amplifier. Wien Bridge is a type of RC phase shift oscillators mostly used for around 1MHz and its design adopts positive feedback technology.  A circuit simulator, Multisim is also used to simulate the circuit. The simulated results were compared with those measured with an oscilloscope for validation, and it had 90% accuracy. The design has beaning successfully achieved by using a practical high-performance op-amp and from the simulation results the frequency bandwidth was 50.7211 MHZ from, VLF (9.83 HZ ) to VHF (50.73 MHZ).