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Constant LED lights for DC !!!!
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Teleman
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PostPosted: Tue Apr 29, 2008 10:22 pm    Post subject: Constant LED lights for DC !!!! Reply with quote

I will make this a sticky as it is what i've been looking for and was trying to find out in the 'has anybody tryed'  

http://www.pollensoftware.com/railroad/index.html

Thanks must go to NClight in Zagreb  Croatia who posted the link and has used it himself and says it works well .

The best part is that you can use the very small SMC LEDs and power up three of them from one regulator . The small ones are about the same size as a lamp in 00 scale so solder on the wires and paint and you have a working lamp !
Can't wait to try it  
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poliss
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PostPosted: Tue Apr 29, 2008 10:54 pm    Post subject: Reply with quote

That's another medal for your chest.
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Teleman
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PostPosted: Tue Apr 29, 2008 10:58 pm    Post subject: Reply with quote

Not for me (the medal that is), i was told about it just passing on info thats all
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poliss
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PostPosted: Tue Apr 29, 2008 11:00 pm    Post subject: Reply with quote

Ok, Mentioned in Despatches then.
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Teleman
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PostPosted: Tue Apr 29, 2008 11:04 pm    Post subject: Reply with quote

Thanks i think it will even be handy for you DCCers out there to
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poliss
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PostPosted: Tue Apr 29, 2008 11:14 pm    Post subject: Reply with quote

The light is always on at full power on dcc even when the loco is staionary. Except you can turn it on and off whenever you like.
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Teleman
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PostPosted: Tue Apr 29, 2008 11:25 pm    Post subject: Reply with quote

But with this you can use the very small LEDs that only need 3 volts to run .Can't find a picture of one ,but they are very small .
Like the ones on the bike that was on ebay
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poliss
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PostPosted: Tue Apr 29, 2008 11:33 pm    Post subject: Reply with quote

The ones I fitted to my Skoda are only 3 volts I think. That's why they have a built in resistor. The max input on them is 12 volts. (I must film it running, been to busy frying decoders).
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poliss
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PostPosted: Wed Apr 30, 2008 12:16 am    Post subject: Reply with quote

5mm Leds are too big for N scale. The circuit still works with 3mm Leds I presume?
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Teleman
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PostPosted: Wed Apr 30, 2008 7:40 am    Post subject: Reply with quote

Yes , it will work with any size LEDs
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Teleman
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PostPosted: Wed Apr 30, 2008 10:30 pm    Post subject: Reply with quote

The smallest ones i could find
http://www.farnell.com/datasheets/46277.pdf

1.5~3~2.2 mill
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Teleman
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PostPosted: Thu May 01, 2008 7:43 pm    Post subject: Reply with quote

I've order some of the regulators today so i will let you know how i get on
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poliss
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PostPosted: Thu May 01, 2008 9:45 pm    Post subject: Reply with quote

I wouldn't mind a few of these LED's. Save lots of space in my loco's.
http://www.dccsupplies.com/shop/product_info.php?products_id=798
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Teleman
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PostPosted: Thu May 01, 2008 9:48 pm    Post subject: Reply with quote

I'm going to try it with 'normal' leds first to see if it works
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poliss
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PostPosted: Thu May 01, 2008 9:58 pm    Post subject: Reply with quote

You don't have to get the angle grinder out to make space for LED's.
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Teleman
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PostPosted: Thu May 01, 2008 10:13 pm    Post subject: Reply with quote

I've not fitted any , yet , as the voltage on the track is only 6 volts when they run at a scale speed of 25 mph i have never bothered as thats a dim glow from a bulb this is all new stuff to me fitting lamps to locos .
The test one will be Ryans 125 as he has to run that realy fast to get the lights on
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poliss
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PostPosted: Thu May 01, 2008 11:24 pm    Post subject: Reply with quote

I just ran my loco again. Tried to film it in the dark but my cams not good enough and all I saw was a black screen. However, with the LED's the brightness is almost the same when creeping as at full speed. The red looks much brighter than white.
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Teleman
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PostPosted: Thu May 01, 2008 11:27 pm    Post subject: Reply with quote

Red leds are brighter , they were the only colour you could get at one time
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poliss
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PostPosted: Thu May 01, 2008 11:37 pm    Post subject: Reply with quote

Bulbs tend to be too dim when loco is run slowly and far too bright at high speed. My ancient Atlas with the Tri-ang Princess type plungers is too bright to look at. I dunno how the driver manages to see out of his cab at night.
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PostPosted: Thu May 01, 2008 11:40 pm    Post subject: Reply with quote

Then this circuit would be just right for it
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poliss
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PostPosted: Thu May 01, 2008 11:53 pm    Post subject: Reply with quote

The LED technology in the advert might come in useful for model rail use, I can't quite think of one yet. http://www.glassiled.com/content/en/
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Teleman
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PostPosted: Fri May 02, 2008 12:00 am    Post subject: Reply with quote

I must have a good read of that ! I can think of a few ways it could be used but not for modelling
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upnick
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PostPosted: Sun Oct 12, 2008 11:15 pm    Post subject: Reply with quote

poliss wrote:
The LED technology in the advert might come in useful for model rail use, I can't quite think of one yet. http://www.glassiled.com/content/en/


If  made  small  enough poliss you  could  have  cinema  boards  /advertising  on  the layout  

Have  you  tried  miniatronics leds nice and  bright  as their  big  brothers  the  micro mini  ones  1.5mm  i  have  one  fitted in the  roof  of  an SW 9   bought  off ebay  converted  to  DCC    originally  purchased in the  States  well i  presume  its  a  miniatronics  one  they  seem  to use  them  regularly in articles  i've  seen .....got  mine  here  


http://www.digitrains.co.uk/PriceList.pdf


unfortunatley  it  seems they  dont  come  clear  though just  green  yellow and red,  if  in clear i'm  sure  the  clear  Tamiya  paints  would  give  you  and  orange  
Th plymouth  switcher  here  has  three  fitted  in front/rear/roof mind the  body  is still  awaiting a coat  of  paint  
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poliss
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PostPosted: Mon Oct 13, 2008 12:42 am    Post subject: Reply with quote

So far I've only used the Maplins 3.5mm 12v with built in resistor. The thing I should be doing next, when I get around to it, is pasting sky wallpaper to my layout lid.
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PostPosted: Mon Oct 13, 2008 7:37 am    Post subject: Reply with quote

Do  you  put  heat shrink around the led  to  keep the  light in easy  tip and it  works  well.
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poliss
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PostPosted: Mon Oct 13, 2008 12:10 pm    Post subject: Reply with quote

The lights in my Skoda have to shine forwards and upwards at the same time. If you look at this picture you'll see there are red and white lights at the base of the cab and a big headlight at the top. The top light on my model uses the amazing properties of perspex to turn light 90 degrees. So what I really need is an LED that shines in all directions at once.



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PostPosted: Mon Oct 13, 2008 8:39 pm    Post subject: Reply with quote

Have  you  thought of light  gathering  rod or fibre optics  if  there is  the  space  Poliss ?
Light  gathering  rod  is  in  the  plastruct  stand  at  my  modelshop  here in  various  thicknesses.
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Teleman
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PostPosted: Mon Oct 13, 2008 10:45 pm    Post subject: Reply with quote

I have all the bits needed , so i will get around to making one this week and running it through fibre optic cable which i will hold in place with heat shrink .
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PostPosted: Mon Oct 13, 2008 11:53 pm    Post subject: Reply with quote

Teleman wrote:
I have all the bits needed , so i will get around to making one this week and running it through fibre optic cable which i will hold in place with heat shrink .



Could  i  place  an  order  for  a   DD40  AX   light  unit  please  Teleman    
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poliss
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PostPosted: Tue Oct 14, 2008 12:10 am    Post subject: Reply with quote

All the lights work on my DD40X. Can't fit a chip because I have no idea where the contacts are. (Old version)



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