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 Forum index » DIY Hardware and Software » fonik's place
PCB OFFER: Single Channel Attenuverter PCB
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fonik



Joined: Jun 07, 2006
Posts: 3756
Location: Germany
Audio files: 23

PostPosted: Sat Dec 15, 2012 5:42 pm    Post subject: Reply with quote  Mark this post and the followings unread

Uncle Krunkus wrote:
fonik wrote:
alas, you need linear pots (actually, read below), and thus you will be very interested in the area near the center for control voltages.


Couldn't you add a 1M fixed from the wiper to each end of the pot, thus putting a 'hump' in it's response? Or are we looking at the reverse effect here? Just an idea.

what we wanted was a log response from 0 to CW and antilog from CCW to 0. so for a 100k we would use 1M on one end, and 10k on the other!? (late at night and i cannot get it straight in my head).

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fonik



Joined: Jun 07, 2006
Posts: 3756
Location: Germany
Audio files: 23

PostPosted: Sat Dec 15, 2012 5:43 pm    Post subject: Reply with quote  Mark this post and the followings unread

Paradigm X wrote:
Im sorry if this is a basic question but can you put audio signals thru this to flip the phase?

Embarassed

Thanks Smile

you can. attenuate and flip the phase.

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Paradigm X



Joined: Feb 15, 2011
Posts: 276
Location: Null and void

PostPosted: Mon Dec 17, 2012 3:32 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks fonik

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Uncle Krunkus
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Joined: Jul 11, 2005
Posts: 4759
Location: Sydney, Australia
Audio files: 52
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PostPosted: Mon Dec 17, 2012 8:30 pm    Post subject: Reply with quote  Mark this post and the followings unread

fonik wrote:
what we wanted was a log response from 0 to CW and antilog from CCW to 0. so for a 100k we would use 1M on one end, and 10k on the other!?


How about a dual gang pot? Yeah, I know, you're trying to keep it small.

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