EricaFu Posted March 28, 2013 Share Posted March 28, 2013 How many peopls have ever bought LED cob corn lights? And can someone tell me ? Link to comment Share on other sites More sharing options...
scubado Posted March 29, 2013 Share Posted March 29, 2013 ??? Got a link or something useful? Link to comment Share on other sites More sharing options...
Ken Benedict Posted March 29, 2013 Share Posted March 29, 2013 (edited) I bought a few to test with, but about blinded myself when I powered it up while leaning over it. Sheesh. Nice design, but waiting for colored ones to come out. I think they're just called COB leds, without the corn. Someone said it means Chip-On-Board, since there are several chips scattered over a 2 inch area. Edited March 29, 2013 by Ken Benedict Link to comment Share on other sites More sharing options...
Dave H1 Posted March 29, 2013 Share Posted March 29, 2013 are you thinking of these type of bulbs Link to comment Share on other sites More sharing options...
Santas Helper Posted March 29, 2013 Share Posted March 29, 2013 (edited) How many peopls have ever bought LED cob corn lights? And can someone tell me ?Nope, my grocery store hasn't got em in yet. Edited March 29, 2013 by Santas Helper Link to comment Share on other sites More sharing options...
magish01 Posted March 29, 2013 Share Posted March 29, 2013 You see the action when you try to microwave these corn cobs! Link to comment Share on other sites More sharing options...
jldavis1969 Posted March 31, 2013 Share Posted March 31, 2013 They are called "Corn Lights" on Ray Wu's site. http://www.aliexpress.com/store/product/E27-55pcs-SMD-5050-LED-Light-Corn-Bulb-11W-770lm/701799_521800729.html http://www.aliexpress.com/store/group/LED-Corn-Lights/701799_210065276.html Link to comment Share on other sites More sharing options...
Ken Benedict Posted March 31, 2013 Share Posted March 31, 2013 Looks like there's a "shape" thing going on. Ones shaped like a corn cob: http://www.ebay.com/itm/E27-LED-Light-Bulb-5W-Warm-White-Corn-Light-108-led-US-Shipping-/400451601508?pt=US_Light_Bulbs&hash=item5d3cc68464 And regular COB lights: http://www.ebay.com/itm/9w-300mA-30V-600-620-LM-White-Round-COB-SMD-LED-Light-Lamp-18pcs-Clips-/380606474448?pt=LH_DefaultDomain_0&hash=item589de9e8d0 And there's a light that uses COB (chip on board) in the shape of a corn cob: http://www.ebay.com/itm/B22-LED-Light-COB-Corn-Bulb-Lamp-6W-Warm-White-Day-Warm-White-/200840446855?pt=UK_Home_Garden_Wall_Lights&var=&hash=item2ec3060387 COB lighting has multiple chips (usually the 3528 style) embedded into a milky or slightly orange substance. It has a more diffused light emitted from it. Corn lighting describes the general shape, it seems. Link to comment Share on other sites More sharing options...
Santas Helper Posted April 1, 2013 Share Posted April 1, 2013 (edited) Edited April 1, 2013 by Santas Helper Link to comment Share on other sites More sharing options...
Mike C. Posted April 6, 2013 Share Posted April 6, 2013 (edited) Ones shaped like a corn cob: http://www.ebay.com/itm/E27-LED-Light-Bulb-5W-Warm-White-Corn-Light-108-led-US-Shipping-/400451601508?pt=US_Light_Bulbs&hash=item5d3cc68464I'm working on something with 16 ( one per channel) of these corn cob looking lights. at 5 watts (.42amps) i should have any problems turning them all on at the same time. These things are bright! hehehe Edited April 6, 2013 by Mike C. Link to comment Share on other sites More sharing options...
Ken Benedict Posted April 7, 2013 Share Posted April 7, 2013 (edited) There are sometimes a small delay in turning these on; it's the internal circuit, not you or the actual LEDs.It can be up to 2 seconds, but is usually 3/4 to 1 second long.If you're trying to make them any quicker, it may not happen. Try one out first; create an on/off sequence of 2 seconds on, 2 seconds off, then try shortening it until you reach the maximum rate.Then that's how fast you can operate them in your light show. If you want faster responses, use one designed to work as a 12 volt car tail light and drive them with a DC controller.You can even get the fancy ones.Or police lights. I have run a number of auto bulbs that way without problems. Edited April 7, 2013 by Ken Benedict Link to comment Share on other sites More sharing options...
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