[sdiy] Ten new student projects up! OTA comment

[Harry Bissell Jr]

RE: OTA comparison

If I read the graphs correctly, the discontinuities
come just above the 1mA level... which is the rated
maximum (or at least recommended maximum) Iabc
for these OTA.  (iirc the CA3280 is unique at 2mA max)

Its food for thought.  I have ssen some funny behavior
above 1mA and maybe what I saw, ~is~ what YOU saw...

H^) harry

--- Aaron Lanterman <lanterma at ece.gatech.edu> wrote:

> 
> See
>
http://users.ece.gatech.edu/~lanterma/studentprojects
> 
> * pitch-to-voltage converter based on a National
> chip
> * VC phaser
> * Wrecktifier Waveshaper (quite novel)
> * Dr. Acula's *GVwow* box (HP/LP
> sallen-key-OTA-based cascade, optimized 
> to sound cool with a guitar)
> * VC Morley Wah
> * VC Twin-T oscillator (didn't work out too be too
> practical - I didn't 
> think it would, but I thought it would be
> interesting exercise to try)
> * Comparision of OTAs (very thorough lab work)
> * Dual Sallen-Key-vactrol-type HP/LP cascade
> * Scream Machine (was supposed to be a Rene MS-20
> with CMOS buffers - the 
> result is technically "broken" but sounds so
> insanely cool I told them 
> _not_ to fix it, as I would have no idea how to
> reproduce the crazy sound 
> the got!)
> * Clone of Music Easel Timbre Generator (didn't work
> out as expected)
> 
> More to come!
> 
> - Aaron
> 
>
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