[sdiy] LM311 VCO: (was 4046 in VCOs (was Hi frequency VC clock))

[Ian Fritz]

Oh, you've been told. :-)

http://www.electro-music.com/forum/topic-28571.html
http://www.elby-designs.com/contents/en-us/p808_IF112_-_Double_Deka_-_US_VCO.html
https://steamsynth.com/shop/moog-unit-modules/double-deka-ultrasonic-vco/
https://www.muffwiggler.com/forum/viewtopic.php?p=1400422
http://ijfritz.byethost4.com/MiscProj/DD.htm
https://www.youtube.com/user/frijitz001
etc.

This beast tracks within .05% over 15 octaves up to 100 kHz and has 20 
ppm/K drift. (Straight Pease design from app notes.)

LM331 is still current from TI. http://www.ti.com/product/lm331

Ian



On 6/23/2017 1:16 PM, Tim Ressel wrote:
> Color me excited!  You can still get the LM331!  Its the Fairchild clone 
> called the KA331. Mouser has it in stock for $0.56! Why didn't anyone 
> tell me?
> 
> --tim (ordering now) ressel