FILTRY v 1.20 Nearly everytime you construct a new piece of equipment you have to design some filter. It's exactly the same for me Now there are several ways to solve this problem: to look in catalogues and handbooks to ask a colleague, etc. The quickest way however, is to say your computer: "I need an active low-pass filter with no more than 0.32 dB up to 3.25 kHz and with more than 22 dB attenuation at 4.06 kHz.". "And should it be Tchebychev or Butterworth ?", it replies Butterworth!", you answer. The schematic diagram then appears on the screen instantaneously. It would be nice, wouldn't it ? But it IS nice! This program is in your hands. Schemati FILTRY20
