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

    Expert

    Dec 20, 2007
    9,640
    980
    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
    6
    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

    Expert

    Dec 20, 2007
    9,640
    980
    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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