|Created||February 23, 2017|
|Last modified||December 22, 2020|
An RC low-pass filter, driven at 10x the corner frequency, produces very roughly 1/10th magnitude and -90 degree phase shift relative to the input. This is like multiplying the phasor by the complex number -0.1j.
This example is from the Complex Numbers chapter of Ultimate Electronics Book. It demonstrates a change in amplitude and phase through an RC lowpass filter, and in the book, we explain how this relates to a complex number multiplication.
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