[sdiy] LM13600 VCO

[Scott Gravenhorst]

That's what I thought too.

Sitting here thinking about it, isn't the real problem due to the
schmitt trigger and not the integrator?  I then thought perhaps one
LM13600 and 2 single opamp packages might be workable as a dual VCO.

Jim Patchell <patchell at cox.net> wrote:
>	As far as making LFO's goes, I have had no trouble doing this.  The 
>only question would be will the two oscialtors soft sync when their 
>frequencies get close...for an LFO this is not an issue...I think.
>
>Scott Gravenhorst wrote:
>> I believe the answer to this one is "don't do it", but I'll
>> ask anyway:
>> 
>> A tri/square VCO can be made using an LM13600, but one
>> amplifier is used as a schmitt trigger.  An opamp could be
>> used for the schmitt trigger.  Is it a bad idea to use an
>> LM13600 and an dual opamp to make a dual VCO?  I'm thinking
>> that there would probably be coupling problems that would
>> result in soft sync between the two VCOs.
>> 
>> =========================================================  
>> - Hydrogen is pointless without solar.
>> - Good or bad, that which gets rewarded, gets done.
>> - What good are laws that only lawyers understand?
>> - The media's credibility should always be questioned.
>> - 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/
>> 
>> 
>
>
>

=========================================================  
- Hydrogen is pointless without solar.
- Good or bad, that which gets rewarded, gets done.
- What good are laws that only lawyers understand?
- The media's credibility should always be questioned.
- 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/