A Wien bridge oscillator circuit is analysed, taking into account the finite gain-bandwidth product of the op. amp. Expressions for the oscillation frequency and its sensitivity to the op. amp gain-bandwidth product are obtained.
Get full access to this article
View all access options for this article.
References
1.
IrvineR. G., Operational Amplifier Characteristics and Applications, Chapter 10, pp. 341–343, Prentice-Hall (1981)
2.
HorrocksP. H., Feedback Circuits and Op. Amps., Chapter 8, pp. 139–142, Van Nostrand Reinhold (1983)
3.
HostetterG. H.SavantC. J.Jnr. and StefaniR. T., Design of Feedback Control Systems, Chapter 3, pp. 115–133, Holt, Rinehart and Winston (1982)
4.
HuertasJ. L.Rodriguez-VazquezA. and Perez-VerduB., ‘High-frequency design of sinusoidal oscillators realised with operational amplifiers’, Proc. I.E.E., 131, Pt. G, No. 4, pp. 137–140 (August, 1984)