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Scratch Box
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The LM386 is a power amplifier designed for use in low volt- age consumer
applications. The gain is internally set to 20 to keep external part
count low, but the addition of an external resistor and capacitor between
pins 1 and 8 will increase the gain to any value from 20 to 200.
The inputs are ground referenced while the output automati- cally biases
to one-half the supply voltage. The quiescent power drain is only 24
milliwatts when operating from a 6 volt supply, making the LM386 ideal
for battery operation.
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