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jayantskathe 20th February 2011 11:28 AM

Bubba Oscillator Calculation
 
Dear All
I wanted to construct the Bubba Oscillator @ 1kHz. ButI ma not able to get the exact formula. I have lloked the net only all refers to TI pdfs. One of the documents (not of TI) said that the formula is 1/(2*pi*r*c*sqrt(6)) . Is this correct? what precautions to take while making one .

please help

rgds
jayant

Aucosticraft 12th October 2011 01:01 PM

Check using LT spice.

DF96 12th October 2011 01:33 PM

No sqrt(6) in the formula, should be just f=1/(2 pi R C). This is because each CR gives 45 degrees phase shift.


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