[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
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Dr. Aaron Lanterman, Asst. Prof. Voice: 404-385-2548
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