Current mirror with Darlington pair + Joule thief

Discussion in 'General Electronics Chat' started by Faites777, Feb 16, 2012.

  1. Faites777

    Thread Starter New Member

    Feb 16, 2012
    I am trying to build a high current driver for an led array.
    Can a Joule Thief with a current source mirror that is using a darlington pair on the load side be all combined?

    Can electronic splice programs simulate the result?
    Any hot areas to worry about with increase in amp?

    I want to build an efficient constant current source driver to deliver power to an array of SST-90 LEDs.
    source:14.4v battery (automotive battery)
    current @ 5A or 9A to get enough lumens
    (have considered buck/boost circuit)

    Thanks ahead.
  2. hspalm

    Senior Member

    Feb 17, 2010
    How many will you be powering in series? Since you're boosting the voltage.