led controller

Discussion in 'General Electronics Chat' started by sheldons, Feb 16, 2013.

  1. sheldons

    Thread Starter Active Member

    Oct 26, 2011
    616
    101
    heres a few photos of my latest led controller and output stage schematic,front end is based on a standard 4017 counter schematic
     
    Last edited: Feb 17, 2013
  2. sheldons

    Thread Starter Active Member

    Oct 26, 2011
    616
    101
    4017 Driver and power supply to follow....
     
  3. timescope

    Member

    Dec 14, 2011
    298
    44
    The BC557 needs a base resistor.

    Timescope
     
  4. sheldons

    Thread Starter Active Member

    Oct 26, 2011
    616
    101
    ooooops 1 mistake in the early hours of this morning....heres the circuit above again with the resistor added (which are present in my design and are very much needed)
     
  5. sheldons

    Thread Starter Active Member

    Oct 26, 2011
    616
    101
    Heres the power supply section....
     
    • 12V.pdf
      File size:
      4.4 KB
      Views:
      8
Loading...