Wikimedi'Òc

Active lowpass filter.png - Omegatron

Aktiver Tiefpass.png - Hardy42

High-pass active filter.png - Zureks

Active lowpass filter.svg - Ss181292

Allpass.svg - Foobaz

Allpass DIN.svg - Cepheiden

Active Lowpass Filter RC.svg - Inductiveload

Active Allpass Filter.svg - Inductiveload

Active Highpass Filter RC.png - Toriicelli

High-pass active filter.svg - ArdWar

1st order filter based on OpAmp Rs n C.png - File Upload Bot (Magnus Manske)

Gyrator circuit with finite non-zero transmission zeroes.png - Constant314

Low pass ladder filter FDNR implementation.png - Constant314

Sallen Key con Ammettenze .jpg - G.mezzina23

Audio spectrum analyzer - one filter-rectifier channel.png - Retired electrician

Active Highpass Filter RC.svg - A09