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  1. just wondering if anyone knows when these are going to hit the shelves to replace incandesant bulbs-like walmart or ace or lowes(not some place on the internet)
    does anyone have a schematic on running 10 or more LEDs(in parallel) on 120V AC without using a transformer
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  2. Член BJ_M's Avatar
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    Jul 2002
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    Canada
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    LED's need to run on DC or they would flicker ..

    they also need to run at lower voltages - idealy 5 v for small ones but larger run on higher voltage (often with a dropping resister in them) ..

    a high power LED light you can buy now ... it is $240 and equal to about a 100 watt light bulb .. also can change colors. it is made up of smaller high powered bulbs.

    those big video screens you see on buildings are LEd (also at stadiums) , at one time they used to use lightbulbs (aka the sony jumbotron) .

    a single color LED lamp are used in stop lights of trucks and busses now ..
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  3. Member
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    Feb 2001
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    51`N 5'W #linux & #vcdhelp @ DALnet
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    delete me. :D
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  4. Yes I am aware of those(I mean no disrespect).
    What I meant to ask was,when are the replacements for the light bulbs going to be common enough that I can get some(at a reasonable cost)
    I am going to try it with 10 that I purchased(10 for 15$ 3000mcd)-I am thinking a bridge rectifier and a large resistor before the rectifier and a capacitor to smooth(get rid of flicker) the voltage after rectification
    Please correct me if I am wrong in my thinking and please point out where I am wrong.
    This first one is just a hobby project just to gain some experience.
    again the idea is to not use a transformer as they tend to be large and I want every thing except the LEDs to fit into a regular lighting screw base.
    I am not going to do my whole appartment in them I just want to make one for the experience.
    I will redo my appartment with them once they become common at stores in the finished form.
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  5. Member
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    Jun 2002
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    I think that if you're going to use a resistor you'll want to connect it directly to the LED's anode. You'll have to calculate the resistor's impedance and power rating based on the LED's current and voltage requirements.
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