Wien bridge oscillator

Version 1.1.0.0 (139 KB) by Eric Ogier
Wien bridge oscillator simulation through differential equation solving
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Updated 15 Apr 2016

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This function simulates the functioning of a Wien bridge oscillator through the numerical solving of its descriptive second order differential equation. The negative feedback loop includes a simple incandescent lamp model, whose resistance, sensitive to the heating coming from Joule effect, stabilizes the gain of the oscillator amplifier.
Video demonstration:
https://www.youtube.com/watch?v=ydk5494kAEg&ab_channel=Pseudonymeoriginal

Cite As

Eric Ogier (2026). Wien bridge oscillator (https://www.mathworks.com/matlabcentral/fileexchange/56537-wien-bridge-oscillator), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2014b
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.1.0.0

Evolution :
- Calculation of voltage and current instead of in-phase and quadrature voltage components
- Substitution of voltage-current plot to Lissajous curve
1.0.0.0

Adding of the schematic and the differential equation of the oscillator in "Wien bridge oscillator.docx".