Music Circuit

Discussion in 'The Projects Forum' started by sajelectric, Mar 29, 2012.

  1. sajelectric

    Thread Starter New Member

    Aug 19, 2011
    15
    0
    Hi,
    I am looking for a simple music circuit for my projector which works on 12V dc
    Can anybody provide me a simple circuit with parameters.
    Thanks
     
  2. russpatterson

    Member

    Feb 1, 2010
    351
    16
    Like you want it to play music? Like MIDI notes or sampled music (MP3's)? You want it to just be an amplifier that you plug an mp3 player into?
     
  3. sajelectric

    Thread Starter New Member

    Aug 19, 2011
    15
    0
    Yes, I just want to play music. like the one we generate music using UM66.
    But the circuit has to work using an input 12V
     
  4. wayneh

    Expert

    Sep 9, 2010
    12,093
    3,031
    Just use a resistor voltage divider to drop the 12v down to 3-4V for the UM66. Set the current in the divider to, say, 1.2 mA. That gives you a total resistance of 10K. The current drawn by the UM66 is no more than 60µA, so it will have little effect on the voltage divider.
     
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