This simulation demonstrates an RC low-pass filter with a cutoff frequency around 159 Hz, where it allows low-frequency signals to pass while attenuating higher frequencies. The circuit consists of a 1 kΩ resistor and a 1 µF capacitor. The input signal frequency varies from 100 Hz to 20 kHz. At frequencies below 159 Hz, the output (green waveform) follows the input (blue waveform) with minimal loss. As the input frequency increases, the capacitor’s reactance decreases, causing the output amplitu