my project : solar street light (variable brightness)

Discussion in 'The Projects Forum' started by tmmizwan, Jan 14, 2009.

  1. tmmizwan

    Thread Starter New Member

    Jan 12, 2009
    5
    0
    I need to do solar street light. For my project i want the light brightness vary with the surrounding brightness. If the surrounding brightness is low, sow the light will produce more brightness and vice versa. I need to know how to make the light brightness vary with surrounding brightness. What the suitable software to simulate the circuit in order to know the efficiency and to make sure the circuit is working. anyone can help me..please
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    You need to select a device to register ambient illumination. That could be a CDS cell, a phototransistor, or a light to voltage converter.

    Then you need to decide on a means of regulating the intensity of illumination. You might wish to decide on the source of the illumination as well.
     
  3. tmmizwan

    Thread Starter New Member

    Jan 12, 2009
    5
    0
    now i wonder how to connect phototransistor to the circuit. can anyone give me example of the circuit connection. should i use battery charger controller for battery protection?
     
  4. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    282
    It would probably be a valuable exercise for you to make up a trial circuit. So far, you are the only one who knows all the details, like the nature of the street light, and so on. We can't help until you have something to show us.
     
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