Created at: 2025-02-16
RC circuits can be used to filter a signal by blocking certain frequencies and passing others. The two most common RC filters are the high-pass filters and low-pass filters; band-pass filters and band-stop filters usually require RLC filters, though crude ones can be made with RC filters.
Presenting the “5RC rule of thumb”: a capacitor charges or decays to within 1% of its final value in five time constants.