Light Brightner/dimmer

Discussion in 'The Projects Forum' started by evision, Feb 25, 2009.

  1. evision

    Thread Starter New Member

    Jan 8, 2009
    1
    0
    I need to support a local Snake park for their immediate problem. In winter the snake park is being lit by Incandescent Lamps to provide heat to the snakes. The problem is : When the Lamps are ON, all the heat is applied instantly, giving the snakes a kind of heat shock !

    I need a circuit that would gradually brighten/dim the lights at a flip of a switch. The time involved is about 1/2 hour.

    Pl. help. Thx.
     
  2. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,176
    397
    How much power is to be controlled? Line voltage 120 AC ??
     
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
    4,176
    397
    ' Just looked at the insides of a comercial light dimmer, 600W,to see if it used a pot. or rheostat, as hoped it was 180kΩ rheostat. Idea: substitute a light-dependent-resistor for rheostat and use easily controlled LED lo V ramp ckt. Found an assortment of LDRs which should work at Electronic Goldmine. If thei seem workable to you I'm sure some member cad come up with a LED control.
     
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