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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
Bi'N'Tic sawtooth out?
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Appliancide*



Joined: Jul 04, 2007
Posts: 122
Location: Paul lives in a 1920’s film

PostPosted: Sun Nov 23, 2008 9:13 pm    Post subject: Bi'N'Tic sawtooth out? Reply with quote  Mark this post and the followings unread

So due to a slight misunderstanding (thought i was getting the bridechamber version of the pcb), I have a cgs bintic mostly built and was wondering if there is still a way to get a sawtooth and square out.

I saw on the cgs list that someone had brought four of the divided square outs to the front panel using a small add-on cgs pcb which I will probably do if there is not an easy way to build this like the bridechamber board.

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andrewF



Joined: Dec 29, 2006
Posts: 1176
Location: australia
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PostPosted: Sun Nov 23, 2008 11:43 pm    Post subject: Re: Bi'N'Tic sawtooth out? Reply with quote  Mark this post and the followings unread

*Appliancide* wrote:

I saw on the cgs list that someone had brought four of the divided square outs to the front panel using a small add-on cgs pcb which I will probably do if there is not an easy way to build this like the bridechamber board.


i just built one of these recently, wired all the spare divider outs to a multi-turn switch. on the switch i soldered a transistor buffer cct, same as you can see for the PWM Pulse out on the CGS VC Divider.
All works fine, haven't checked it on the 'scope but it sounds good and strong, and different settings give you a wide range of frequencies.
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j.dilisio



Joined: May 19, 2009
Posts: 200
Location: baltimore

PostPosted: Tue Jun 02, 2009 10:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

I was getting ready to order this pcb and parts from Bridechamber.

Are you saying that the board they sell is the same as the CGS board?
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andrewF



Joined: Dec 29, 2006
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PostPosted: Wed Jun 03, 2009 12:03 am    Post subject: Reply with quote  Mark this post and the followings unread

They are different
i have only seen a pic of bridechambers, but there are more ICs and the layout is very different.
the description says saw&sq outputs from the VCO core. Possibly it uses the same circuitry east of the CA3140 on the CGS VCO.

Either way it is still worth the effort to tap the spare outputs of the 4024
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