220V LED Bulb convert to 110V or DC

Discussion in 'The Projects Forum' started by johnnyoh, May 9, 2011.

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  1. johnnyoh

    Thread Starter New Member

    May 9, 2011
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    I am a complete novice at electronics but like to fiddle. Any way to make this 220V bulb work on 120V or can I just use the LED Panel by itself with a DC power somehow by cutting the wires to the board and adding a resistor. It has 145 LED bulbs. a series of 73 and 72 in in parallel Pics attached thanks. I tried to put the values but frankly I don't know for sure their right . I wish I could swap out a couple things to make it 110v or just add a resister or something to make it DC battery powered. Thanks for any help.
     
  2. bertus

    Administrator

    Apr 5, 2008
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    Hello,

    Due to safety and / or enviromental issues I am closing this thread.

    Quote:
    6. Restricted topics. The following topics are regularly raised however are considered “off-topic” at all times and will results in Your thread being closed without question:

    • Any kind of over-unity devices and systems
    • Automotive modifications
    • Devices designed to electrocute or shock another person
    • LEDs to mains
    • Phone jammers
    • Rail guns and high-energy projectile devices
    • Transformer-less power supplies
    This comes from our Tos:
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    Bertus
     
  3. bertus

    Administrator

    Apr 5, 2008
    15,647
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    Hello,

    I got this in an email from the OP:

    When I look at the led arrangement in the "broken" AC lamp, I see that ALL leds are mounted in series.
    To use that on DC you probably need more than 200 Volts DC to let it light up.

    You will need to "break" it up into several strings of a couple of leds.

    If you want to make a DC battery powered LED lamp take a look at Bill_Marsdens thread on leds:
    LEDs, 555s, Flashers, and Light Chasers

    Bertus
     
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