Do amplifier power inputs have to be clean/regulated?

Discussion in 'The Projects Forum' started by TheLaw, Nov 9, 2010.

  1. TheLaw

    Thread Starter Member

    Sep 2, 2010
    228
    2
    Hi,

    I'm working on making a small amp. I've drawn up all of the schematics and I am putting it in Eagle at the moment. Something that hit me was that I had very little voltage regulation on the power input. I will be using 8xAA batteries in this particular amplifier. I am building a Ruby amp which is essentially a refined LM386 amp.

    I was curious as to how clean I should have the power input. If I put in a regulator and some caps, would it sound better? Or does voltage fluctuation not matter as much?

    Thanks.
     
  2. marshallf3

    Well-Known Member

    Jul 26, 2010
    2,358
    201
    I'd just add a decent electrolytic and small (HF bypass) cap across the battery then not worry about it.
     
  3. TheLaw

    Thread Starter Member

    Sep 2, 2010
    228
    2
    Thank you. Would a regulator improve anything at all? It would probably decrease battery life but I might be willing to sacrifice a bit of battery life.

    Thank you again.
     
  4. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    No. All it would do is waste some available power, and cause your batteries to go dead faster.
     
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