Bubba Oscillator Calculation

jayantskathe · 20th February 2011, 10:28 AM

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, 12:01 PM

Check using LT spice.

DF96 · 12th October 2011, 12:33 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.

20th February 2011, 10:28 AM	#1
jayantskathe diyAudio Member Join Date: Feb 2011	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/(2pircsqrt(6)) . Is this correct? what precautions to take while making one . please help rgds jayant

12th October 2011, 12:01 PM	#2
Aucosticraft diyAudio Member Join Date: Nov 2009 Location: Pune	Check using LT spice. __________________ There is always a first time....

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12th October 2011, 12:33 PM	#3
DF96 diyAudio Member Join Date: May 2007	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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