tag:blogger.com,1999:blog-1839283755150354175.post201905707302612177..comments2023-11-30T04:02:38.654-05:00Comments on 2-Rail O Scale Railroading: Fun with LEDsTerry Terrancehttp://www.blogger.com/profile/17477117990537957379noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-1839283755150354175.post-41754669103048165572022-05-27T14:54:36.260-04:002022-05-27T14:54:36.260-04:00I have had this in my address book for quite a lon...I have had this in my address book for quite a long time, just came upon it again. Great information. Ray PulsAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-1839283755150354175.post-9040998652392675432012-02-20T13:26:15.725-05:002012-02-20T13:26:15.725-05:00One thing about using resistors as voltage droppin...One thing about using resistors as voltage dropping components to power lights (be they incandescent or LED's) that really bugs me is the ignorance about POWER. For instance, if you use a 12 volt supply to power a single LED, that means that, using your example of 2 volt drop across the LED means 10 volts is dropping across the resistor. In round figures, 25 mA is going through the string which means that 10 x 25 = 250 milliwatts (or a quarter of a watt) is being disspated in the resistor. If you have used a 1/4 watt resistor, it can get very HOT. NEVER neglect the power calculations!Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-1839283755150354175.post-55246974184220667282012-01-06T20:47:35.501-05:002012-01-06T20:47:35.501-05:00Great Information. I was wondering about LED'...Great Information. I was wondering about LED's and their useage on my model railroad. You explained it very clearly.Ken Scottnoreply@blogger.comtag:blogger.com,1999:blog-1839283755150354175.post-22371405254204175772011-12-05T17:21:54.968-05:002011-12-05T17:21:54.968-05:00Excellent stuff. I was listening to a podcast tod...Excellent stuff. I was listening to a podcast today that was talking about the requirements of LEDs. Nice that you put up that exact info. Also saw a reference in the Model Rail Radio list about a possible book of electronic projects for model railroaders like this. I for one would be in the market for that book!Anonymoushttps://www.blogger.com/profile/15272348913051219666noreply@blogger.comtag:blogger.com,1999:blog-1839283755150354175.post-60222229562367923402011-11-11T06:04:39.042-05:002011-11-11T06:04:39.042-05:00cool! thanks for this one! at least i get a guide ...cool! thanks for this one! at least i get a guide of how to do the leds. <a href="http://www.youtube.com/watch?v=xryiaLx_x7s" rel="nofollow">railroading</a>Railroadinghttp://www.youtube.com/watch?v=xryiaLx_x7snoreply@blogger.com