1 Techie. Electronics, Programming, Mechanical. I do it for fun, but I walk a lonely road.

Gibsons, British Columbia
Joined April 2011
Do you life activities include diagnosing bad capacitors on circuit boards? Take the time to build an in-circuit capacitor tester and stop needlessly replacing caps that are fine! It takes just seconds to go thru a board and identify all the bad caps! ruemohr.org/~ircjunk/circuit…
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I hate it when I just want to build something, but the only project going needs software to get to the next step, and I didn't want to do software.
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Well, my general method works.... (It misses -6db for reasons)
Replying to @Gnarflordius
I'm gonna see if I can code this one up in my discrete-time code here.
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Filters naturally roll off at 20db/decade because the formula for db is 20*log(~). A lines formula is y = m*x + b In Log space, the +b is a multiply/divide of the amplitude. m is always 1, which is why its always 20db/decade.
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In order to change the slope, you need to adjust the amplitude by the frequency to the power of your slope adjustment. Aka * freq^-0.15
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I can't be sure anyone has ever tried to adjust the roll-off, everyone seems to just go to complex arrays of filters that approximate the rolloff they are going for. ???????
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First Order low pass filter that rolls off at 9.5db/decade. Oh, I'm sorry, would you like me to adjust that rolloff a bit? Which way? By how much? No problem! }:)
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"Here at twitter were making lots of improvements all the time!, most of them break our system! Are you enjoying our changes?"
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I have to ponder this.. (note the slope..) Its a modified integrator.
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