Solenoid Switching

Discussion in 'General Electronics Chat' started by patycoop, Jan 19, 2011.

  1. patycoop

    Thread Starter New Member

    Jan 19, 2011
    1
    0
    Need help to determine the npn transistor size and bias resistor resistance calculation for a curcuit the will drive a 12v 20 ohm dc soleniod.
    The digital bias voltage is 5v for high 40ma max rating.
    Any help would be greatly app.

    See attached diagram.
     
  2. nomurphy

    AAC Fanatic!

    Aug 8, 2005
    567
    12
    Zetex ZXMN6A09G N-MOSFET with a 10K gate resistor.

     
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