Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Generally it would have a gain of 1 (no gain at all) for it's passband, and attenuate below that, based on so many dB's per octave, depending on the slope of the filter.
An equal-value components (R and C) two-pole Sallen and Key Butterworth filter needs a gain of about 1.6. Google for Sallen and Key Filter and you'll find a list of component ratios vs gain required.
The gain determines the damping of the filter. Too much gain gives a peaked response near its cutoff frequency, like I use for my stereo's and clock radio's bass-boost circuits. Way too much gain and you have an oscillator.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
