Calculate Current

Discussion in 'Homework Help' started by rohanbhatia, Mar 15, 2012.

  1. rohanbhatia

    Thread Starter New Member

    Mar 15, 2012
    Hi... I just started embedde3d C at uni and the prelim work had this question... i dont remeber much from my first year at uni so would appreciate the help.... These are the 2 questions....

    1. How much current will the LEDs draw?
    2. How do we make the Z8 supply this current from these pins?
  2. jtrent

    New Member

    Mar 11, 2012
    OK, to calculate the current in your circuit, I am making a couple of assumptions.
    1. To light your LED, you are placing ground or zero volts on the cathode of the LED
    2. The voltage drop across the LED is approximately 2 volts
    see my full comments here