Power transistor

Discussion in 'The Projects Forum' started by Bill Hopkins, Feb 23, 2015.

  1. Bill Hopkins

    Thread Starter New Member

    Feb 23, 2015
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    Hi

    I am currently designing a project but unfortunatly I dont know an awful lot about power transistor circuits. Im using a MYDAQ to drive an analogue output of 10vdc but it dosnt have enough power to drive the blower Im using. Ive been researching power transistor circuits and there are so many different types I dont know what kind to use....Any help on this would be greatly appreciated?

    Thanks
    Bill
     
  2. #12

    Expert

    Nov 30, 2010
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    What's a MYDAQ?
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Last edited: Feb 23, 2015
  4. #12

    Expert

    Nov 30, 2010
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    I guess your search engine is better than mine. :oops:
     
    Dodgydave likes this.
  5. Bill Hopkins

    Thread Starter New Member

    Feb 23, 2015
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    Sorry, my daq is a small data acquisition device developed by national instruments to allow students develop small projects outside of college
     
  6. #12

    Expert

    Nov 30, 2010
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    This claims to contain the specifications for it.
     
  7. MrChips

    Moderator

    Oct 2, 2009
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    What are the voltage and current requirements of your blower?
     
  8. Bill Hopkins

    Thread Starter New Member

    Feb 23, 2015
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    The output voltage is 12vdc and up to 1.5 amps
     
  9. #12

    Expert

    Nov 30, 2010
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    Blowers don't, "output" volts and amps, they "output" air.
    What volts and amps does the blower use?
     
  10. MrChips

    Moderator

    Oct 2, 2009
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    You want to look at an emitter follower circuit such as this:

    upload_2015-2-23_18-27-36.png

    However, since the myDAQ max output is 10V you will need to add an amplifier stage to go beyond 12V.
     
  11. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    I asked this in post #3, still no reply.
     
  12. Bill Hopkins

    Thread Starter New Member

    Feb 23, 2015
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    Sorry Dave, never spotted the second part of your post.
     
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