Inputting sample wave to test the frequency response

I want to test the frequency response of my low pass filter by using a sample sine wave which has different frequencies with respect to time. Can I upload the same on this platform and simulate the circuit?

by robinthomasss
April 26, 2022

Have you check Lesson 12 - Define Component Algebraically (Behavioral Source) in the CircuitLab Academy ?

by vanderghast
April 27, 2022

1 Answer

Answer by OakBloodThree

If your sample is really just a sine wave of varying frequency, you're better off just having CircuitLab generate a sine wave and apply it to the circuit.

This is very simple and is built into the Frequency Domain simulation. Include a Voltage Function Generator source to drive your filter, and simulate it over the desired frequency range.

You can even calculate the response multiple times with a sweep of a parameter. Here's an LC low-pass filter with a sweep of the resistor value to alter the Q factor of the filter.

Open the circuit and run the Frequency Domain simulation to see.

+2 votes
by OakBloodThree
May 06, 2022

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