Krohn Hite Tuneable Active Filter

Krohn-Hite 3955 programmable, dual channel, low-pass filter is the first dual low-pass filter of its kind, covering the wide cut-off frequency range from 170Hz to 25.5MHz with 2½ digits of resolution. The 9355 is a 4-pole maximally flat (Butterworth) filter, with an attenuation slope of 24dB/octave and a stop band attenuation>100dB reffered to 1Vrms input. The Krohn-Hite 3955 fills many applications such as: high frequency anti-aliasing for digital signal processing. EMI testing, video recording and many more.