[sdiy] MOTM300 is an interesting design
Aaron Lanterman
lanterma at ece.gatech.edu
Sun May 14 11:26:24 CEST 2006
As a side note - Paul's VCO is a sawtooth core, but the integrator isn't
quite like anything I've seen. There is no integrating op amp. The cap
just sort of hangs out, and is buffered by this dual-FET uberbuffer
between it and the relatively low-impedance input LM319 (it reminds me of
some early Buchla stuff where he puts FETs before BJT op amps).
And the intergrating cap it discharged with... a 2N4402 BJT???? Not a FET
or MOSFET? Strange and interesting...
The summer stage looks top notch... all OP275s and such...
- Aaron
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