mini burger speakers

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

  1. raffter

    Thread Starter Active Member

    Feb 28, 2008
    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..