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regularjackson
Joined: Apr 12, 2012 Posts: 17 Location: Canada
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Posted: Thu Jun 07, 2012 8:51 pm Post subject:
linear or log? |
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I'm a total noob when it comes to electronics. I get some things and I've managed to build some circuits from schematics on this sub-forum, but every time I come across a pot in the schematics, I don't know if I should be using log or linear pots. What exactly is the difference, and how do I figure out which I should be using? Any help is appreciated, thanks! |
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Mikmo
Joined: Dec 01, 2005 Posts: 150 Location: Copenhagen - Denmark
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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Posted: Fri Jun 08, 2012 3:31 am Post subject:
did someone say pot ? |
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If you're using an existing schematic it's usually mentioned what you need. If there is no mention it's presumed to be a linear pot. There
are different notations, I grew up with A meaning linear and B meaning log, but apparently some manufacturers now use A (as in Audio)
for log and B for linear . So that might be confusing. I just use 'lin' or 'log' in my schematics.
Since you posted this in the Lunetta forum, you will probably use pots mostly for oscillators. You can use linear pots for these but personally
I prefer reverse log (if you can find them). You can also use a normal log and wire it backwards but that will result in the frequency
decreasing when turning the pot Clockwise. _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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Draal
Joined: May 18, 2010 Posts: 308 Location: Oak Park, IL
Audio files: 5
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Posted: Fri Jun 08, 2012 4:42 am Post subject:
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I prefer audio pots for most stuff; the ear perceives the change more gradually with audio taper. That said, I use whatever is on hand, bro, these machines love whatever ya throw at em. _________________ Zontar Prevails! |
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JingleJoe
Joined: Nov 10, 2011 Posts: 878 Location: Lancashire, England
Audio files: 14
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Posted: Fri Jun 08, 2012 5:38 am Post subject:
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I was going to post a link to one of those two pages mikmo posted, because of this. I often find that when purchasing log pots I can't find anything that says whether it is commercial or true log, so I tend to stick to linear pots. However as mentioned above, human hearing is not linear so log pots/anti log sound linear to us. _________________ As a mad scientist I am ruled by the dictum of science: "I could be wrong about this but lets find out"
Green Dungeon Alchemist Laboratories Last edited by JingleJoe on Fri Jun 08, 2012 7:03 am; edited 1 time in total |
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regularjackson
Joined: Apr 12, 2012 Posts: 17 Location: Canada
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Posted: Fri Jun 08, 2012 6:13 am Post subject:
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Great, thanks everybody! |
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