[sdiy] Rays modules ==8-O

[Scott Gravenhorst]

music.maker at gte.net wrote:
>>> 
>>> Hello Group,
>>> I've decided to cut out some of Ray's modules on my board mill but the VCO
>>> skeers me.
>>> Can anyone provide me with the appropriate tempco?
>>> I don't want to hunt them down only to have to order a thousand of them.
>>> Also will I have a hard time find LM13600 I.C.'s?
>>> I was actually thinking of the simpler 4069 osc but it lacks the sync, PW
>>> and other features I would really like. Could they be implemented in the
>>> 4069?
>
>PWM (not sure what PW is in this context) is already provided, assuming you
>are referring to the René Schmitz circuit.  As for sync, I'm inclined to
>believe it's possible.  The control for reset is the schmitt trigger which is
>composed of two inverters.  If were to dive in and make an experiment, I
>would think that it could be done.  My guess would be to substitute the right
>most inverter of the schmitt trigger pair with either an AND gate or an OR gate.

ARGH !!!  I see that I've blundered again.  That should be NAND or NOR...

>Perhaps Mr. Schmitz will pipe in here, I'd like to know if this is possible
>and exactly how to do it as well.
>
>
>>> Is there a simpler osc that has these features only simpler to build? I am
>>> really not concerned about temp stability.
>>> Finally, would I be able to use rotary switches to "patch" them together?
>>> 
>>> (Oh my gosh, I need a Valium!)
>>> 
>>> Sorry for all the ?? and as always
>>> Thanks
>>> 
>>> Jim
>
>
>
>---------------------------------------------------------
>- Where merit is not rewarded, excellence fades.
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>- What good are laws that only lawyers understand?
>- The media's credibility should always be questioned.
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>
>-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
>-- Linux Rex         | RedWebMail by RedStarWare
>-- FatMan: home1.gte.net/res0658s/fatman/
>-- NonFatMan: home1.gte.net/res0658s/electronics/
>-- Autodidactic Master of Arcane and Hidden Knowledge.
>

---------------------------------------------------------
- Where merit is not rewarded, excellence fades.
- Hydrogen is pointless without solar.
- What good are laws that only lawyers understand?
- The media's credibility should always be questioned.
- The only good terrorist is a dead terrorist.
- Governments do nothing well, save collect taxes.

-- Scott Gravenhorst | LegoManiac / Lego Trains / RIS 1.5
-- Linux Rex         | RedWebMail by RedStarWare
-- FatMan: home1.gte.net/res0658s/fatman/
-- NonFatMan: home1.gte.net/res0658s/electronics/
-- Autodidactic Master of Arcane and Hidden Knowledge.