[sdiy] National LM139 VCO

[Tim Johnson]

Hello Group,
Has anyone seen the VCO application using the National LM139.
I ran across it on page 13 of the datasheet and was wondering if the guru's 
here had any thoughts about the use of the circuit style in general as a 
synth VCO.

http://www.national.com/ds/LM/LM139.pdf

Thanks

Jim

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