mini burger speakers

Discussion in 'The Projects Forum' started by raffter, Mar 20, 2010.

  1. raffter

    Thread Starter Active Member

    Feb 28, 2008
    113
    0
    Hi guys,

    familiar with this little gadget? measures about 2" sphere...used to amplify sound from mp3/4 players... Im just wondering on HOW they manage to make the sound output BIG... its like 1-3watts rms (I think) from a single Li Ion battery(im guessing!) ... they do charge from USB jack (w/c is 5V)...

    is there an audio amplifier IC capable of such output power with 5V supply? Im guessing maybe a boost converter(say 4Vin to 12Vout) to power up a common audio output IC(maybe an LM380)..something like that.. ???

    just clueless.. have never opened one..

    -Ralph
     
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