UH3455 Posted November 20, 2005 Report Share Posted November 20, 2005 Hi all, I have been working in the Electronic stethoscope 2. I would like to get the transfer function of this schematic, but I have not been able to get it. I get stuck at the non-inverting terminal of the LM386 power amp. Can any one tell how to solve from there?Thanks,UH3455 Quote Link to comment Share on other sites More sharing options...
audioguru Posted November 20, 2005 Report Share Posted November 20, 2005 Hi UH,The LM386 is a linear non-inverting power amplifier with built-in negative feedback for a voltage gain of 20. It also has built-in internal biasing so that its inputs work at ground which is its negative supply voltage. Its datasheet is here:LM386.pdf Quote Link to comment Share on other sites More sharing options...
UH3455 Posted November 20, 2005 Author Report Share Posted November 20, 2005 Thanks for the data sheet. I was trying to get the transfer function so I can put it in my formal report for my class. I have an experimental bode plot that I measured, but the plot only tells me where the poles and zero are located.UH3455 Quote Link to comment Share on other sites More sharing options...
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