[sdiy] 2nd Revision of Analysis of Buchla 259 principal oscillator

Aaron Lanterman lanterma at ece.gatech.edu
Wed Feb 15 06:53:50 CET 2006


Correction to the last one - Magnus pointed out that what looks like 4.29 
on the schematic really should be 4.39

Adjusting...

Let's find out what values of vo will trip the comparitor.

By the usual resistive divider setup:

v- = (vtri 28.7 + 15 * 4.99) / (28.7 + 4.99)

v- = vtri 0.8519 + 2.2217

The comparitor trips at 0 and 4.29 V. This corresponds to tripping at

vtri = (0 - 2.2217) / 0.8519 = -2.608

vtri = (4.39 - 2.2217) / 0.8519 = 2.5453

Ah! That's more like it!!!

- Aaron

-----------------------------------------------------------------------------

Dr. Aaron Lanterman, Asst. Prof.       Voice:  404-385-2548
School of Electrical and Comp. Eng.    Fax:    404-894-8363
Georgia Institute of Technology        E-mail: lanterma at ece.gatech.edu
Mail Code 0250                         Web:    users.ece.gatech.edu/~lanterma
Atlanta, GA 30332                      Office: GCATT 334B




More information about the Synth-diy mailing list