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 Forum index » DIY Hardware and Software » Thomas Henry designs
X-4046 VCO Page is Up
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fonik



Joined: Jun 07, 2006
Posts: 3619
Location: Germany
Audio files: 23
PostPosted: Mon Nov 07, 2011 3:33 am    Post subject: Reply with quote  Mark this post and the followings unread
a short soundsample of my dual X-4046 VCO - thank you, thomas!
(sorry for the bad video quality, but i have been too lazy to install a proper light)


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Sonic



Joined: Dec 02, 2010
Posts: 81
Location: Toronto
PostPosted: Mon Nov 07, 2011 6:02 am    Post subject: Reply with quote  Mark this post and the followings unread
Lovely sounds Fonik. Can't wait to get mine up and running.
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Tim Servo



Joined: Jul 16, 2006
Posts: 906
Location: Silicon Valley
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PostPosted: Mon Nov 07, 2011 12:03 pm    Post subject: X-4046 VCO Page is Up Reply with quote  Mark this post and the followings unread
Nice work, Mattias!

What sort of tracking range are you getting from the 4046 VCOs?


Tim (should be working, but checking e-m.com) Servo
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Paradigm X



Joined: Feb 15, 2011
Posts: 252
Location: Null and void
PostPosted: Mon Nov 07, 2011 4:47 pm    Post subject: Reply with quote  Mark this post and the followings unread
Sounds amazing!

Im definitely getting one or two of those on the next run.

Does that include the waveshaping things?

Excellent.!
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Wobuse



Joined: Dec 07, 2011
Posts: 8
Location: Lyons,il
PostPosted: Wed Dec 21, 2011 7:13 pm    Post subject: X-4046 confusion
Subject description: Anyone else notice this?		 Reply with quote  Mark this post and the followings unread
Hey Spitfire...
Sorry to necro post but I see a problem on the PCB you etched,I know because I just made the same mistake. I think I should of flipped or reversed the artwork for this board,before I made it with Press N Peel.As it is now & just like your board pics I think the Chips are backwards & upside down; meaning you would have to intstall your chip sockets on the copper side of the PCB in order for the pinouts to work.Keep in mind that the square pad is pin one on the IC . Anyone else care to comment.
spitfire wrote:
Guys, I'm confused. I made PCB by myself, panel, everything as always. But I'm stuck on wiring. I see two J1, two J2, in schematic is writen to connect volt/octave to J1, but there's two of them on PCB, and also 1v/octave is writen there... I'm posting some pictures how my works look like. I hope you will help me. I don't want burn everything after such a nice working.

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ungleichklang



Joined: Dec 03, 2011
Posts: 62
Location: East-Belgium
PostPosted: Mon Jan 09, 2012 5:33 am    Post subject: Reply with quote  Mark this post and the followings unread
@Rykhaard
Is the 'error' on the PCB layout already fixed?? (10k res. in Sinesection @ TL074)

I would love to build one of those ...

EDIT: I'm a newbee to electronic-circuits, so don't beat me please .... but if I understand the sheets and the comments right, then the little error on the pcb-layout by rykhaard is this one see attachment??
(borrowed the layout from drapdap on page 3)

x4046-rework.png
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rework of pcb-layout regarding 10k res. in Sinesection @ TL074
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x4046-rework.png

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ungleichklang



Joined: Dec 03, 2011
Posts: 62
Location: East-Belgium
PostPosted: Thu Jan 12, 2012 7:11 am    Post subject: Reply with quote  Mark this post and the followings unread
a second newbee question on the original schematics ....

between leg2, leg 3 and leg 14 of the IC1 (4046) there is a XOR-GATE, is this something internal of the IC or do I miss a part ???
the PCB-Layout yust makes a bridge between legs 2 and 5, leg 14 goes to +15 and leg 3 goes to Q3 / R14 .....
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slacker



Joined: Nov 18, 2007
Posts: 301
Location: England
Audio files: 11
G2 patch files: 1
PostPosted: Thu Jan 12, 2012 11:33 am    Post subject: Reply with quote  Mark this post and the followings unread
Yes, the XOR gate is part of the CD4046. Pins 14 and 3 are the inputs and 2 is the output.
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