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Old 11th April 2012, 05:57 PM   #11
TB is offline TB  United States
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In this case still one question remains; would this chip well work well with 1000 uF caps or it needs more capacitance.
I have also noticed in the schematic the input cap is small, 0.47 uF. is it enough or it should be increased to 1 uF?
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Old 13th April 2012, 02:35 PM   #12
TB is offline TB  United States
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Man, it looks like a tough crowd here.......

May be this question will prompt the answer..... original amp schematic does not show Zobel. But, Figure 22 in this document:
http://www.cirrus.com/en/pubs/appNote/Apex_AN01U_I.pdf
mentions the use of it. I do not understand why it was not mentioned in orginal schematic. Is it due to use of current limiting resistors ( Rcl ) which might grant stability control?
So, my another question is: should Zobel be always used for this chip or it would depend on speaker impedance/sensitivity?
And of course my other two questions are still unanswered........

Last edited by TB; 13th April 2012 at 02:40 PM.
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