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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
CGS Gate Sequencer "don't bring to front panel"
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Ali M



Joined: Sep 01, 2009
Posts: 96
Location: uk

PostPosted: Mon Feb 06, 2012 8:42 am    Post subject: CGS Gate Sequencer "don't bring to front panel" Reply with quote  Mark this post and the followings unread

Hi there,

Can someone clear something up for me,

"The following outputs are for internal use only, when connected to the switch bank and output buffer boards: ODIS (output disable), CLK OUT (clock out), C1 to C8 (column outputs). Do NOT bring these output out to front panel jacks, as you may damage the circuitry."


I am a bit confused as to what I can bring out onto the front panel. I wasn't going to build a buffer board, just single gate outs on SPST and one row of CV. But I did want to add an output jack for each step of the sequencer, kind of like a clock divider.

Can I not bring column outs to the front panel?

Cheers
Ali
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Mongo1



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

PostPosted: Mon Feb 06, 2012 9:19 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Can I not bring column outs to the front panel?


I'm sure you can - you just need to add some buffers.

Gary
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Ali M



Joined: Sep 01, 2009
Posts: 96
Location: uk

PostPosted: Mon Feb 06, 2012 9:39 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Gary,

I dont understand how it could damage the circuit...
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Mongo1



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

PostPosted: Mon Feb 06, 2012 11:12 am    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
I dont understand how it could damage the circuit...


It looks to me like Ken chose to use +15V and Gnd on the chips driving that logic. if you brought those lines out, and inadvertently plugged in a signal that was going below ground (say a waveform with +/- 5V on it), you could probably damage the chips.

I'm guessing that's what Ken was looking out for.

Gary
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