Light Dimmer 2x 12V/60W

Discussion in 'The Projects Forum' started by MadMike99, Feb 9, 2015.

  1. MadMike99

    Thread Starter New Member

    Feb 9, 2015
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    Good evening everydoby. I want to make a light dimmer, but I've got some problems with it. I need to dim two light bulbs 12V/60W each. I was trying to do it with an LM358 but the power loss on the last transistor would be like 120W (12V per bulb/ current 10A). Can someone help me to create a scheme? I would like to make it and try it out. I want to mention that I am a beginner. I've attached my first project, but as I said there would be a big power loss on the last transistor. I have read about PWM but how will it work with two light bulbs that need 120W?
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
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  3. MadMike99

    Thread Starter New Member

    Feb 9, 2015
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    So as its written there I should only choose another MOSFET according to my needs (one that can carry 10A) and instead of the motor put two parallel located light bulbs, am I right? I forgot to add, that English is not my native language, so sorry for all mistakes that I have made.
     
  4. Dodgydave

    Distinguished Member

    Jun 22, 2012
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    Yes replace the motor with the parallel bulbs, you may need an heatsink for the mosfet.
     
  5. MaxHeadRoom

    Expert

    Jul 18, 2013
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    If using AC why not use a Triac control much lower component count than DC & PWM.

    Max.
     
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