Cgs synth

>Hi Folks,
>I am getting around to building the gate seq as an "analog sequencer".
>I am adding an on-board clock and have a few questions. I don't want
>to use a square wave because then the on and off times are the same.
>I need a variable on off clock.
>I think I can use a 555 timer with pots on R1 and R2 ( as seen in most
>digrams on the web) as a pulse with controlled clock. OR I could use
>a flip floop with two osc driving the data and Clk. inputs (cd4013).
>This would control the on and off cycle as well.
>
>anyone have a thought on which is easier or better? I want to be able
>to control the gate on and off times.
>
>thanks for any suggestions,
>Jeff
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>

--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> Wire up the 555 as a monostable, and use its output as your
variable pulse
> length.. You can then drive the 555 from any square wave clock and
still get
> a variable gate pulse length.
> Forget about using a flip flop.
>
> Ken
>
> >Hi Folks,
> >I am getting around to building the gate seq as an "analog
sequencer".
> >I am adding an on-board clock and have a few questions. I don't
want
> >to use a square wave because then the on and off times are the
same.
> >I need a variable on off clock.
> >I think I can use a 555 timer with pots on R1 and R2 ( as seen in
most
> >digrams on the web) as a pulse with controlled clock. OR I could
use
> >a flip floop with two osc driving the data and Clk. inputs
(cd4013).
> >This would control the on and off cycle as well.
> >
> >anyone have a thought on which is easier or better? I want to be
able
> >to control the gate on and off times.
> >
> >thanks for any suggestions,
> >Jeff
> >
> >
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
>
_____________________________________________________________________
__
> Ken Stone sasami@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies
<http://www.blaze.net.au/~sasami/>
>

--- In cgs_synth@yahoogroups.com, Pete <23isgood@...> wrote:
>
> As far as I understand, the output of a 555 based clock is a
square wave. I
> would suggest you build the VC clock from the CGS31 - Digital
Noise. Just
> omit everything at the 4006 and keep the circuitry before it. This
way you
> could patch in an external clock if you needed too. I used this VC
clock for
> a little gate sequencer I built based on a Blacet design and it
works great!
>
>
>
>
> --
> http://www.myspace.com/23isgood
>
>
> [Non-text portions of this message have been removed]
>

--- In cgs_synth@yahoogroups.com, "Jeff Foster" <spgjmf@...> wrote:
>
>
> Peter,
> I think the 555 can be many things...I'll look at Ken's 4006 clock
> as well. maybe it can drive the 555 ....
>
>
>
> thanks
> JEff
>
> --- In cgs_synth@yahoogroups.com, Pete <23isgood@> wrote:
> >
> > As far as I understand, the output of a 555 based clock is a
> square wave. I
> > would suggest you build the VC clock from the CGS31 - Digital
> Noise. Just
> > omit everything at the 4006 and keep the circuitry before it.
This
> way you
> > could patch in an external clock if you needed too. I used this
VC
> clock for
> > a little gate sequencer I built based on a Blacet design and it
> works great!
> >
> >
> >
> >
> > --
> > http://www.myspace.com/23isgood
> >
> >
> > [Non-text portions of this message have been removed]
> >
>

--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> > looking at the 555 cookbook, it's possible to get variable pulse
> >width with the right circuit.
> >Rig
>
> Of course it is. The monostable suggestion just adds versatility.
Note that
> using a 7555 will be better than a 555 as the latter is murder on
the power
> rails.
>
> Ken
>
>
_____________________________________________________________________
__
> Ken Stone sasami@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies
<http://www.blaze.net.au/~sasami/>
>

--- In cgs_synth@yahoogroups.com, "Jeff Foster" <spgjmf@...> wrote:
>
>
> Great. I rigged up a 556 on a breadboard tonight and it worked.
Even
> have a trigger LED on the output..whee
> I have a 1 meg pot which seems to give good control of gate on
time,
> but the adjustments are all bunched up at the start of the pot
(full
> cc). I guess its a log vs. linear thing...not sure what pot I
have,
> but I'll dig around for another.
>
> I get the ssg or comparitor output drive the 556 and this inturn
> drive a SCi Pro One seq and it works....got a love analog.
>
> thaks for the suggestions, I'll look for a 7555. btw -I have a 1
meg
> pot and 4.7uf for the timing discharge cap.
>
> -Jeff
>
> --- In cgs_synth@yahoogroups.com, sasami@ wrote:
> >
> > > looking at the 555 cookbook, it's possible to get variable
pulse
> > >width with the right circuit.
> > >Rig
> >
> > Of course it is. The monostable suggestion just adds
versatility.
> Note that
> > using a 7555 will be better than a 555 as the latter is murder
on
> the power
> > rails.
> >
> > Ken
> >
> >
>
_____________________________________________________________________
> __
> > Ken Stone sasami@
> > Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> > Australian Miniature Horses & Ponies
> <http://www.blaze.net.au/~sasami/>
> >
>