Helping in building an IR light circuit

Discussion in 'The Projects Forum' started by marcolisi, Nov 19, 2008.

  1. marcolisi

    Thread Starter Member

    Nov 18, 2008
    15
    0
    Hello guys,
    I need some help please.

    Im trying to build my own IR light source to add to my nightshot camcorder.

    I want buy a :

    1) 5 Watt Infrared IR LED Night vision camera Flashlight

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWNX:IT&item=250326011738


    but the guy that sell it , I think does not know anything about it.

    My guess is that to make the 5 watt IR led work (not to heat too much and blow up), I need two

    5 Watt LED Pulse Driver

    http://cgi.ebay.com/5-Watt-LED-Puls...205|66:2|65:12|39:1|240:1318#ebayphotohosting

    What I do not understand is :

    1) how do I connect two 5 Watt LED Pulse Driver to one 5 Watt Infrared IR LED Night vision ?

    My thinking is to connect :

    A) Power Source that has + and - to B) one 5 watt led pulse drive , connecting it to the + and - of the power source. Then connect to the 5 watt led pulse drive B) another C) 5 watt led pulse drive , connecting + with + and - with - . Then connect the D) 5 watt infrared IR led night vision to the C) 5 watt led pulse drive, connecting + with + and - with - .
    Am I correct ?

    2) Which is the power source that I should use in Voltage ? ( how many AA batteries I should use and should I use a resistor ?)

    For the question 2) , these are the specs of the :

    A) 5 Watt led puls drive :

    Frequency: 30KHz
    Type: Pulse Driver
    Operating voltage: 5V-8V
    Current(peak): 950mA
    LED support: Blue/White/Green/IR
    (note: it can drive a 3W IR LED in full power. You need two for a 5W IR LED)

    and of the

    B) 5 watt infrared led :

    Specifications
    Wavelength: 850nm
    Vf: 1.5V~1.6V
    If: 2500 mA+
    Dimension
    Backplate(W): 19.9mm

    Can u please help me ?
    Thank you
    Marco


     
  2. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    I wouldn't buy a no-name-brand LED that has no datasheet and no instructions.
    It is not 5W, it is "up to" 5W. Do you want a continuous light or a flickering light?
    Do you want the LED to last longer than a few minutes?
     
  3. marcolisi

    Thread Starter Member

    Nov 18, 2008
    15
    0
    I would like to have a continous light that would last a while.
    Do u have any advice in what could I buy ?
    I would prefer if it is something small and easy to carry.
    Thanks
    Marco
     
    Last edited: Nov 19, 2008
  4. HarveyH42

    Active Member

    Jul 22, 2007
    425
    5
    Never seen high power IR LEDs. Will have to look and see if this is for real. I always figured they kept the power output low, since there isn't a huge demand, and potential for injury and liability. I would think 5 watts if infrared at close range would cause some serious eye damage, quickly.
     
  5. marcolisi

    Thread Starter Member

    Nov 18, 2008
    15
    0
    Thank you.

    Coming back to my initial question:

    how do I make the circuit of:

    5 watt led
    +
    two led pulse drivers ( will the ir light blink ?)
    +
    Power source ( which power source do I need to use?)

    You can see the questions in the previous reply.

    Thank you
     
  6. Audioguru

    New Member

    Dec 20, 2007
    9,411
    896
    The instructions for the LED and pulser are a poor translation (?).
    So who knows???????

    No Name-brand.
    No datasheet.
    No info.
     
    Last edited by a moderator: Nov 20, 2008
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