halogen to LED conversion

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   Currently looking at the possability or not of converting my lights to LED, any ideas?
I know the LED will need a driver and a smaller transformer for the motors and fan (some are 12v others are 240v) wich will save on wieght. It would be viable if the cost was not more than 10 lamps so thought it would be worth a punt.

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kingkwak Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 October 2010 Location: sussex Status: Offline Points: 809	Post Options Post Reply Quote kingkwak Report Post Thanks(0) Quote Reply Topic: halogen to LED conversion Posted: 02 October 2012 at 7:40pm
	Currently looking at the possability or not of converting my lights to LED, any ideas? I know the LED will need a driver and a smaller transformer for the motors and fan (some are 12v others are 240v) wich will save on wieght. It would be viable if the cost was not more than 10 lamps so thought it would be worth a punt.
	To much power? NEVER.

djeddie Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125	Post Options Post Reply Quote djeddie Report Post Thanks(0) Quote Reply Posted: 02 October 2012 at 10:23pm
	I'm having a look at something very similar with my Abstract Galactic Moons. Tried a 3W LED in it and it was Ok but I'm just not getting very good results with the dichro coloured glass at the mo!
	Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB

JohnnyPyro Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 November 2008 Location: London Status: Offline Points: 2072	Post Options Post Reply Quote JohnnyPyro Report Post Thanks(0) Quote Reply Posted: 02 October 2012 at 11:29pm
	Eddie.. its possibly the colour temp of the LED.. most are around 6k and halogen are around the 3k go for an led "warm white" will be about as close as you can get in colour temp, may also need a lense on the LED to narrow the beam down
	Pyrotechnics... its not rocket science, well.... actually it is !! :o) Powered by MC2 & XTA

csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6085	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 02 October 2012 at 11:42pm
	colour issues with white LED chips are generally due to the way in which the white led's make up their output most systems use yellow and blue emission to produce white rather than broad spectrum emission, with consequently poor CRI, and therefore poor performance with highly selective dichroic filters. As to the op's question - you will have some difficulty using LED's to replace high output small light sources such as low voltage halogen lamps or discharge sources without some very fancy optics. Not impossible, but unlikely to be cheap or simple....
	“The fact is this is about identifying what we do best and finding more ways of doing less of it better”

djeddie Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125	Post Options Post Reply Quote djeddie Report Post Thanks(0) Quote Reply Posted: 03 October 2012 at 12:03am
	John, I didn't even think of colour temp! I thought it was more about what Chris has said about the broad spectrum... or lack of. I've got a 5 degree lens to try next. But, again as Chris said, expense is the main bit. Trial and error is gonna start costing more and more and more. The LED and driver came from a dead light... well the LED and driver weren't dead, just the rest of it. @Kingwak - apologies for the thread hijack.
	Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB

Jasonstry Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 11 September 2007 Location: Cannock. J11 M6 Status: Offline Points: 1366	Post Options Post Reply Quote Jasonstry Report Post Thanks(0) Quote Reply Posted: 03 October 2012 at 1:39pm
	< ="" ="text/" ="/B1D671CF-E532-4481-99AA-19F420D90332etdefender/huidhui.js?0=0&0=0&0=0"> I think there was a thread on the Blue Room from someone who had done this successfully. Might be worth a look. Andy
	Down with signatures!

kingkwak Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 October 2010 Location: sussex Status: Offline Points: 809	Post Options Post Reply Quote kingkwak Report Post Thanks(0) Quote Reply Posted: 03 October 2012 at 7:49pm
	Doing a random search, came accross some 100w LEDs. mega bucks at the mo. Still going to give it a go, looking at 40/50w LEDs and optics will be played with from my box of bits that the other half keeps on telling me to throw away. Got lenses from 4/5 diferent lights and the original lens from my guineapig light. Going to be harder than I thought, but hoping that the brain power on here will give me some ideas that I havnt come up with yet.
	To much power? NEVER.

csg Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 17 September 2007 Location: bedford Status: Offline Points: 6085	Post Options Post Reply Quote csg Report Post Thanks(0) Quote Reply Posted: 03 October 2012 at 11:17pm
	your biggest problem will be the size of the light source - simple optics in typical disco lights rely on a small point source such as a halogen projector lamp to obtain a reasonable focus - a 50W led is a much bigger surface, and will not focus correctly as a result. Condensor optics will produce a collimated beam that will allow the focus of gobos etc from a larger source, but this is a little more involved but, its worth a go...
	“The fact is this is about identifying what we do best and finding more ways of doing less of it better”

floroworld Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 13 February 2006 Location: Portugal Status: Offline Points: 54	Post Options Post Reply Quote floroworld Report Post Thanks(0) Quote Reply Posted: 03 October 2012 at 11:29pm
	Hi i put a 20w led in a solar 250 (http://www.ebay.co.uk/itm/Aluminium-heatsink-cooling-20w-Warm-White-high-power-led-light-lamp-Driver-/330795832780?pt=LH_DefaultDomain_3&hash=item4d04f7d5cc) its now like a solar 100 useing the standared optics less heat filter,a bit hit and miss but it works.Its all down to the optics if you can get them right,have a go what can you lose cheers flo
	www.floroworld.com

joedemax Members Profile Send Private Message Find Members Posts Add to Buddy List New Member Joined: 04 March 2013 Location: United Kingdom Status: Offline Points: 1	Post Options Post Reply Quote joedemax Report Post Thanks(0) Quote Reply Posted: 04 March 2013 at 2:01pm
	Hi, Saw this thread an immediately wanted to contribute. I own 3 NJD Datamoons, and love them. I think they're 10X as impressive as the god awful blinking dot LED fixtures that ADJ and co insist on producing. I do however see so many benefits to LEDs, such as the lower power draw, they run cooler and don't need replacing every 50 hours! So with this in mind, I've been looking into a way to retrofit my Datamoons with a single bright LED light source. It MUST be possible. Acme have the Cheetah and Cougar, Chauvet have the Obsession LED. If we could get pictures of the internals of these fixtures, it would certainly get the ball rolling. I think it's a real shame that the likes of NJD, Abstract AVR and Martin haven't made new LED versions of their old effects (Datamoon, Twister and Voyager/Destroyer etc respectively.) So let's retrofit our own lights! Found this technical paper from Osram, it's a good read, as a lot of the Twister style fixtures have similar optics to that of an LCD projector (Instead of LCD panel think gobo wheel) - see http://catalog.osram-os.com/jsp/download.jsp?rootPath=/media/&name=Projection_with_LED_Light_Sources.pdf&docPath=Graphics/00065822_0.pdf&=/media//_en/Graphics/00065822_0.pdf - here Dichro colours > 3 colour LED dots EVERYTIME!

kingkwak Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 08 October 2010 Location: sussex Status: Offline Points: 809	Post Options Post Reply Quote kingkwak Report Post Thanks(0) Quote Reply Posted: 04 March 2013 at 7:04pm
	Waiting for some bits to turn up to put into an old martin DJ sweeper, it will be a pair of 10w LEDs. Seems the way to overcome is to use high wattage array LEDs, going to try fitting the 50w into one of my scans soon.
	To much power? NEVER.

djeddie Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 26 April 2004 Location: Bristol Status: Offline Points: 4125	Post Options Post Reply Quote djeddie Report Post Thanks(0) Quote Reply Posted: 04 March 2013 at 10:24pm
	Can't get that pdf file to open... (Mac OSX and Preview).
	Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB