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Thread: LED caselight




  1. #1
    Join Date
    Jul 2002
    Posts
    13

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    My diagram:
    http://www.geocities.com/supracar33202/index.html

    5mm Blue LED spec:
    Typ. MCD: 2200mcd
    Typ. Voltage: 3.5v (4.0v MAX)
    mA: 20

    Switch spec:
    http://www.allelectronics.com/cgi-b...-106&type=store

    I'm new to electrical things. Will my project work?

  2. #2
    Join Date
    Nov 2001
    Posts
    4,723

    Default

    I've always used 12V LED's so I'm not going to even try to go over the resistors ATM, I'm assuming that's A-OK.

    You're wiring appears to have a simple yet fatal flaw however.
    The first LED in the circuit - I'm assuming that will be an indicator lamp for your switch?
    The way you have it wired, it will prevent current from flowing to your dual-banked series of LED's. Electricity will always take the shortest distance to ground. When you close the circuit using your switch it will flow through the first LED and then directly to ground.

    The easiest fix I see would be to have 2 hot wires coming off the LED side of the switch and split the ground wire to have 2 grounds. That way you'll have 1 each hot and ground wires for your indicator and 1 each hot and ground wires for your banks of LED's in series.
    Basically, make 2 circuits out of the one and I think you'll be OK.
    The reason a diamond shines so brightly is because it has many facets which reflect light.

  3. #3
    Join Date
    Jul 2002
    Posts
    13

    Default

    "The easiest fix I see would be to have 2 hot wires coming off the LED side of the switch and split the ground wire to have 2 grounds. That way you'll have 1 each hot and ground wires for your indicator and 1 each hot and ground wires for your banks of LED's in series."

    I don't understand. Where should I solder the LED's ground wire?

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