Low-pass filter and integrator in Excel
Today I want to publish a couple of useful spreadsheet I made to solve electrical circuits.
The first is an integrator circuit: a pulsing DC voltage charges a capacitor in steps. This spreadsheet calculates the voltages across the capacitor over time. It's a pretty complex formula to do it manually.
The second spreadsheet calculates the frequency response in a series RLC circuit, in this case the voltage is taken across the capacitor, therefore it's a low-pass filter.
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