nunny Posted August 19, 2016 Share Posted August 19, 2016 Hi All, im wondering if anyone has come across a 12v vintage / retro style LED bulb I know there are a lot of 240v driven LED 4w, we have aproject whereas we may need to run some from a battery pack. Mike Link to comment Share on other sites More sharing options...
Andrew Edwards Posted August 19, 2016 Share Posted August 19, 2016 Filament might be the magic search term on fleabay or ali. Big Clive is the man to ask though. He has taken many 12v LEDs to bits on his channel but I can't say I remember a filament one though. Link to comment Share on other sites More sharing options...
Jivemaster Posted August 19, 2016 Share Posted August 19, 2016 Car lamp with perhaps a modified shade to replicate the globe shape? Link to comment Share on other sites More sharing options...
J Pearce Posted August 19, 2016 Share Posted August 19, 2016 I believe most of the LED filaments use LEDs in series to make the filament strips, so forward voltage is above 12V. Link to comment Share on other sites More sharing options...
CPlater1 Posted August 19, 2016 Share Posted August 19, 2016 Apparently some Chinese suppliers have 12V DC LED Filament lamps, no idea how good they will beOne on Aibaba Link to comment Share on other sites More sharing options...
boatman Posted August 20, 2016 Share Posted August 20, 2016 There's an article on LED filaments in this month's Elektor magazine. Try this link: https://www.elektormagazine.com/files/magazine/2016/article/EN2016090641.pdf Link to comment Share on other sites More sharing options...
adam2 Posted August 20, 2016 Share Posted August 20, 2016 In general the modern but vintage style LED filament bulbs are only available for line voltage. As has already been said, each "filament" consists of a large number of small LEDs in series, that in total require more than 12 volts. A step up circuit within the lamp could be utilised, as with 12 volt CFLs, but presumably the market is too small for anyone to have developed such. To work one of these lamps from a battery I would use an inverter, small ones are now very cheap. Link to comment Share on other sites More sharing options...
cedd Posted August 20, 2016 Share Posted August 20, 2016 I've been down this exact line recently. With my wedding less than 3 weeks away (eeep) and with Eddison a surname (wrong spelling I know) it seemed apt to have some vintage-looking light bulbs on display. I'd hoped to have some on stands down the tables. With kids being around I reasoned that low voltage might be safer. I searched high and low but couldn't find any and in the end, gave up. I did buy a few and try them on 30V DC just to see if they'd light up, but they didn't. I did wonder about trying to remove the innards of the lamps and coming up with something using EL wire, but it wasn't really bright enough. Link to comment Share on other sites More sharing options...
Owain Posted August 20, 2016 Share Posted August 20, 2016 I've been down this exact line recently. With my wedding less than 3 weeks away (eeep) and with Eddison a surname (wrong spelling I know) it seemed apt to have some vintage-looking light bulbs on display. I'd hoped to have some on stands down the tables. With kids being around I reasoned that low voltage might be safer. I searched high and low but couldn't find any and in the end, gave up.If they're low enough power you could run them through a shaver transformer, which would isolate them from earth. Or get some intended for USA 110V and run them through a building site transformer, which will drop the voltage to earth to 55V. 12V ones are available https://www.12vmonster.com/search?type=product&q=*12v%20filament* http://www.lumenalights.com/shop/6W-LED-Candle-Bulb-ES-Warm-White-12V.html - this would give you the LEDs and driver if not the completely correct shape and filament look Link to comment Share on other sites More sharing options...
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