Bode plot: Difference between revisions

Revision as of 09:35, 25 October 2022

Revision as of 18:22, 9 July 2023

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The Bode plotter is an electronic instrument resembling an [[oscilloscope]], which produces a Bode diagram, or a graph, of a circuit's voltage gain or phase shift plotted against [[frequency]] in a feedback control system or a filter. An example of this is shown in Figure 10. It is extremely useful for analyzing and testing filters and the stability of [[feedback]] control systems, through the measurement of corner (cutoff) frequencies and gain and phase margins.

This is identical to the function performed by a vector [[Network analyzervector (electrical)|network analyzer]], but the network analyzer is typically used at much higher frequencies.

For education/research purposes, plotting Bode diagrams for given transfer functions facilitates better understanding and getting faster results (see external links).