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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
Ray's Five Octave Switch Layout/PCB?
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tomas1808



Joined: Sep 27, 2013
Posts: 3
Location: location location location

PostPosted: Fri Sep 27, 2013 3:49 pm    Post subject: Ray's Five Octave Switch Layout/PCB? Reply with quote  Mark this post and the followings unread

Hi,

Has anyone made a layout for the Octave Switch made by Ray?

This is the one:
Posted Image, might have been reduced in size. Click Image to view fullscreen.

If not I'll do the layout myself

Thanks!
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Mongo1



Joined: Aug 11, 2011
Posts: 411
Location: Raleigh NC

PostPosted: Sat Sep 28, 2013 11:59 am    Post subject: Reply with quote  Mark this post and the followings unread

I was just considering doing something like that myself. If you do, let me know - I'd probably buy a couple from you...

Gary
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tomas1808



Joined: Sep 27, 2013
Posts: 3
Location: location location location

PostPosted: Sat Sep 28, 2013 1:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

I did a layout yesterday but I am not too sure how to aproach the 2.5V shunt regulator diode.

What I am supposed to do with the "Adj" pin? Should I leave it 'open'?

Posted Image, might have been reduced in size. Click Image to view fullscreen.

Also, are bypass caps placed as they should?

I put the 100K resistors of the exponential convertor there. I think they are not needed.

Someone please check, this is my first layout ever!
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Nardu



Joined: Feb 28, 2011
Posts: 40
Location: Braila, Romania

PostPosted: Sun Sep 29, 2013 11:09 am    Post subject: Reply with quote  Mark this post and the followings unread

Just see the datasheet for LM336Z-2.5 and LM4040-2.5 ; don't connect the "Adj" pin

You have a little error on PCB - see image


Octave Switch.jpg
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Octave Switch.jpg



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tomas1808



Joined: Sep 27, 2013
Posts: 3
Location: location location location

PostPosted: Sun Sep 29, 2013 11:13 am    Post subject: Reply with quote  Mark this post and the followings unread

Nice catch!

I'll leave 'adj' pin disconnected.

I'll try to etch one soon to try it out.

Thanks Nardu.
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