As I was following the E.W.S fuzzy drive saga and Analogguru's enlightening points about design and how lot's of mistakes are made when people copy 1:1 versions of previous booteek builds that had compromised got me thinking of coming up with a list of must observed practices when designing a pedal. Now this has been done but I was thinking along the lines of a quick and dirty list. input impedance of a circuit should not be over or under " X" amount(this was one of AG points on the fuzzy drive thread). I think if there was a ten commandments type of manifesto of quick and dirty things to do/not to do I think would help a lot of first time builders.
What say you?
design check list
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RnFR
- Old Solderhand
Information
i think that's a great idea. but the list would be quite long. there are quite a few bases to cover. if it the ball gets rolling, we can edit the first post of the thread to include the main points.
i'll add another one- it's a good idea to (2.)add a small cap to ground and it's appropriate resistor in order to make a Low Pass Filter in order to block RF at the beginning of a circuit. ex. an LPF w/ a 10K resisitor and a .001 cap has a corner frequency of around 16Hz. realistically, i believe we can make the cap smaller than this, because although the corner frequency is higher, it will still attenuate at 6dB per octave below that point. i think the idea is to try to keep the resistor and the cap as small as possible in order to reduce noise and to not unwillingly reduce treble content, while still having a large enough amount of rolloff to keep out RF.
i'll add another one- it's a good idea to (2.)add a small cap to ground and it's appropriate resistor in order to make a Low Pass Filter in order to block RF at the beginning of a circuit. ex. an LPF w/ a 10K resisitor and a .001 cap has a corner frequency of around 16Hz. realistically, i believe we can make the cap smaller than this, because although the corner frequency is higher, it will still attenuate at 6dB per octave below that point. i think the idea is to try to keep the resistor and the cap as small as possible in order to reduce noise and to not unwillingly reduce treble content, while still having a large enough amount of rolloff to keep out RF.
"You've converted me to Cubic thinking. Where do I sign up for the newsletter? I need to learn more about how I can break free from ONEism Death Math." - Soulsonic
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Blog-APOCALYPSE AUDIO
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freq67
- Solder Soldier
RnFR wrote:i think that's a great idea. but the list would be quite long. there are quite a few bases to cover. if it the ball gets rolling, we can edit the first post of the thread to include the main points.
i'll add another one- it's a good idea to (2.)add a small cap to ground and it's appropriate resistor in order to make a Low Pass Filter in order to block RF at the beginning of a circuit. ex. an LPF w/ a 10K resisitor and a .001 cap has a corner frequency of around 16Hz. realistically, i believe we can make the cap smaller than this, because although the corner frequency is higher, it will still attenuate at 6dB per octave below that point. i think the idea is to try to keep the resistor and the cap as small as possible in order to reduce noise and to not unwillingly reduce treble content, while still having a large enough amount of rolloff to keep out RF.
That's exactly the kind of useful info I'm talking about!!! Yes,I can see this kinda being a long list but if we keep the insights in a brief context I think we can keep the info in a manageable format.