12v Battery to 6V Power

Discussion in 'General Electronics Chat' started by extrememc, Jun 18, 2009.

  1. extrememc

    Thread Starter New Member

    Jun 18, 2009
    3
    0
    I am need help with getting power from a A23 12v battery down to 6v or 4 AAA equivalent. To power this device http://tinyurl.com/m7nbpz . I am currently power it with 4 AAA's but I would like to reduce the power source to run on the A23 or something of that size. Can anyone give me some ideas? I would like to keep it simple if possible. Some inline from the power source.
     
  2. SgtWookie

    Expert

    Jul 17, 2007
    22,182
    1,728
    Your tinyurl link points to a wireless USB dongle set; those would be powered by the USB port itself.

    Run-time on the A23 compared to four AAA's would be very short, and A23's are very expensive.
     
  3. extrememc

    Thread Starter New Member

    Jun 18, 2009
    3
    0
    The pc adapter is power by the pc and the base or transmitter is power by ac which I converterd to dc power using 4 AAA's. If the A23 is a short lived power source then what is another option?
     
  4. hwy101

    Active Member

    May 23, 2009
    91
    28
    If your looking to power that dongle with a battery instead of USB port, my choice is the L544, 6V Lithium, they do last longer than the A23 and are reasonably priced.
    I just use a small resistor to lower the voltage down to about 5V
    http://24hourbatteries.com/shop/__l544battery.html
     
  5. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    All the previous is true, you could also use NiMH "AA" or "AAA", which have longer life than alkalines, but shorter than Lithium. Both Lithium and NiMH are 1.2 and 1.25V, so you should be able to tie 4 in series and get the desired 5V.

    A good read, The Battery University.
     
  6. extrememc

    Thread Starter New Member

    Jun 18, 2009
    3
    0
    I am already using 4 AAA battery to power it now.
     
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