Solenoid Controlling

Discussion in 'The Projects Forum' started by HallMark, Apr 3, 2013.

  1. HallMark

    Thread Starter Member

    Apr 3, 2011
    89
    5
    I want to control a solenoid and its rating is 2A. I am using MOSFET for it but it is getting heated after 1 hour. Its holding current is also high as 1.5A.

    Is there any solution for this?
     
  2. shortbus

    AAC Fanatic!

    Sep 30, 2009
    4,000
    1,512
    It would only be a guess without your schematic. Does the mosfet have the correct size heatsink for the current handling it is doing? Is it possible to leave the solenoid off after it does its job?
     
  3. Brownout

    Well-Known Member

    Jan 10, 2012
    2,375
    998
    It's normal for a power MOSFET to get a little heated after an hour of operation. The question is, how heated?
     
  4. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,170
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    Seems that FET is or should be disipating only 40 mW; high RDS?; not enough drive?
     
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