From: christopher@librehacker.com   
      
   Hi, I had some LM386 chips on hand, and I downloaded the LM386 Low   
   Voltage Audio Power Amplifier data sheet (Rev C).   
      
   https://media.digikey.com/pdf/Data%20Sheets/Texas%20Instruments%   
   0PDFs/LM386.pdf   
      
   I built, on a breadboard, the minimum part count application on page 8   
   (Figure 10, section 9.2.1), except that I got rid of the 10k volume   
   control resistor on pin 3, and I replaced the speaker with a 4 ohm   
   resistor. Am using a 6V supply for pin 6, and feeding in test signals of   
   about 5 kHz, amplitude 100 mV RMS.   
      
   I'm finding, though, that — unless I ground out the input — that however   
   I tweak the input frequency or amplitude, I still get garbage output.   
   The output looks like some kind of complicated sum of many saturated   
   signals of various frequencies.   
      
   Does anybody have thoughts on where I might have gone wrong, to guide my   
   troubleshooting?   
      
   I re-checked my pin connections a few times, and the component values,   
   which are reasonably close. I replaced the LM386 chip once as well, and   
   got the same results.   
      
   --   
   Christopher Howard   
      
   --- SoupGate-Win32 v1.05   
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