LM386 gain
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LM386 gain

 
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sannydrops



Joined: 11 Feb 2006
Posts: 2
Location: Philippines
Posted: Sat Feb 11, 2006 4:11 pm    Post subject: LM386 gain Reply with quote
It says in the specs that the gain varies from 20 to 200 depending on the capacitor across pins 1 and 8. So what would the gain be if i placed a 10 microfarad capacitor? How can I compute for the gain? Can somebody pls give me the formula? Is the gain stable coz I tried testing it and it varies...does the gain really behave that way?


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neon



Joined: 25 Feb 2006
Posts: 593
Posted: Sat Feb 25, 2006 1:10 pm    Post subject: Reply with quote
the capacitor if installed 10 mfd actualy ac bypass an internal 1,35k resistor which changes the gain from 20 to 200 or a gain 46 db. formula why bother put a variable resistor in series with the cap and adj. there you go instant volume control.
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