amplify

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tdag

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I was given a school project on making an amplifier. Can anyone tell me how I can make a hand held amplifier to hear conversation from a distance that you could not normally hear. schmatic or something thanks
 
What you can do, is build an "Electonic ear" circuit, which are small, and simple.

Here is an example:
https://xoomer.virgilio.it/fladelle/Page38.htm

If the electronic ear is not enough amplification, you can add a simple amplifier circuit, using a cheap LM386 or LM741 amplifier circuit but this will add more noise, and more battery drain.

Good luck!
 
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