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roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
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Posted: Wed Oct 03, 2012 5:20 am Post subject:
Min/Max inconsistencies |
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Hi Yves,
I am planning to build your Min/Max processor, but I have noticed some inconsistencies. R16 and R37 are labelled as 50K in the schematics, but 100K on the board and in the BOM. Which is correct? Also, will this run on +/-12V without changes?
Many thanks! |
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wmonk
Joined: Sep 15, 2008 Posts: 528 Location: Enschede, the Netherlands
Audio files: 15
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Posted: Wed Oct 03, 2012 10:43 am Post subject:
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There are two parallel 100K resistors on the boards. So you can either insert one 50K, or two 100K in parallel (means it makes a resistor of 50K).
See also the note on the YuSynth page.
http://yusynth.net/Modular/EN/MINMAX/index.html
Cheers,
Woody _________________ Weblog! |
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roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
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yusynth
Joined: Nov 24, 2005 Posts: 1314 Location: France
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Posted: Wed Oct 03, 2012 1:56 pm Post subject:
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Yes the second 100K (in parallel) must be soldered under the PCB (track side). _________________ Yves |
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roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
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Posted: Thu Oct 04, 2012 2:04 am Post subject:
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Thanks Yves!
I've built a single version on stripboard. Works like a charm on 12V. I have not normalised the inputs to GND since my jacks are not switched. However, the positive and negative rectification still works well with the second input floating. Is there a specific reason why you are grounding them or just to be safe from eventual bleed/crosstalk?
Thank Yu for sharing this great little circuit! |
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yusynth
Joined: Nov 24, 2005 Posts: 1314 Location: France
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Posted: Thu Oct 04, 2012 4:56 am Post subject:
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Yes it's just for security. _________________ Yves |
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roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
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Posted: Thu Oct 04, 2012 5:03 am Post subject:
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Ok, cool! So I'm going to keep the wires short... |
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marfoski
Joined: Jan 26, 2011 Posts: 36 Location: Italy
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Posted: Thu Oct 04, 2012 5:52 am Post subject:
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yusynth wrote: | Yes the second 100K (in parallel) must be soldered under the PCB (track side). |
Yves,
I wonder if that makes any difference. I've built this module without those supplemental resistors (and I believe that many others did just the same) and I didn't notice anything wrong. |
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yusynth
Joined: Nov 24, 2005 Posts: 1314 Location: France
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Posted: Thu Oct 04, 2012 7:37 am Post subject:
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Yes it makes a difference if you want to have a true min/max function and if you use this module to combine CVs it can be annoying but if you use only this module to produce distorsions in sound this not really important _________________ Yves |
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marfoski
Joined: Jan 26, 2011 Posts: 36 Location: Italy
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Posted: Thu Oct 04, 2012 10:06 am Post subject:
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Thank you, Yves!
Honestly, until now I've used the module only for audio, so your explanation is welcome. I've just done the mod and it works flawlessly. Perhaps it would be worth to amend your site accordingly. Anyway we're all in debt with you for your splendid work. |
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roglok
Joined: Aug 28, 2010 Posts: 202 Location: uptown
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Posted: Thu Oct 04, 2012 10:09 am Post subject:
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marfoski wrote: | Anyway we're all in debt with you for your splendid work. |
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yusynth
Joined: Nov 24, 2005 Posts: 1314 Location: France
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Posted: Thu Oct 04, 2012 4:27 pm Post subject:
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Yes I should amend this page and I will asap. _________________ Yves |
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