Electrical & Computer
Bode Filter Lab
A static textbook Bode plot can't show you how the response moves. Pick a low- or high-pass RC filter, drag the resistor and capacitor, and the magnitude (dB) and phase curves redraw live over a log-frequency axis. The corner sits at fc = 1/(2πRC); above it a low-pass rolls off at 20 dB per decade while the phase slides toward −90°. It connects component values to the frequency response the way equations alone never quite do.
995 Hz
Cutoff fc
-3 dB
At fc
20 dB/dec
Roll-off
Filter
The corner sits at fc = 1/(2πRC) — halve R or C and it doubles. Below fc a low-pass passes; above, it rolls off at 20 dB per decade with the phase sliding to −90°.
How to use this simulation
A static textbook Bode plot can't show you how the response moves. Pick a low- or high-pass RC filter, drag the resistor and capacitor, and the magnitude (dB) and phase curves redraw live over a log-frequency axis. The corner sits at fc = 1/(2πRC); above it a low-pass rolls off at 20 dB per decade while the phase slides toward −90°. It connects component values to the frequency response the way equations alone never quite do.
Everything runs in your browser — no sign-up, no download. Change a value and the result updates instantly, so you can build a feel for how each input shapes the outcome. It pairs with Crameleon's practice exams and step sheets when you want to go from intuition to working the problems.