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MXR pedals - LED current draw

Discussion in 'Effects [BG]' started by the low one, Aug 20, 2012.


  1. the low one

    the low one

    Feb 21, 2002
    UK
    Does anyone know the current draw of the LED's used by MXR?

    I have the MXR bass octave deluxe and as I only use a couple of effects I use a battery, but I like to the use the MID+ button which leaves the MID+ LED lit continually. If it uses 3mA or under then the power consumption is minimal and nothing to worry about.

    Thanks
     
  2. rratajski

    rratajski Commercial User

    Jul 1, 2008
    Mount Laurel, NJ
    Builder for FUZZROCIOUS PEDALS
    Below minimal
     
  3. Jazz Ad

    Jazz Ad Mi la ré sol Supporting Member

    Typically about 50 µA when fully on.
     
  4. the low one

    the low one

    Feb 21, 2002
    UK
    Really, so looking on an on-line converter I see:
    50 Microampere [µA] = 0.05 Milliampere [mA]

    You're right rratajski, that is below minimal. So for a standard 9v battery rated at 550 mAh that equates to 7,700 hours. Is that right ?
     
  5. Jazz Ad

    Jazz Ad Mi la ré sol Supporting Member

    Yes, although this kind of numbers doesn't mean much.
    There are many parameters that will make your battery go bad long before you used all its energy.
    The LED on my Pink Floyds Pulse CD blinked for over 4 years before the AAAA battery decided to be dead.
     
  6. the low one

    the low one

    Feb 21, 2002
    UK
    Yes, I appreciate that the battery will run out through general use of the pedal long before but it's nice to know the LED itself won't drain the battery.

    And I guess it acts as a battery indicator too which is handy.
     

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