by EWBrown » Wed Apr 06, 2005 12:23 pm
The blue (as wel as white and "true" green)" LEDs don't like to be back-biased, they would need DC, so a small FWB would be needed. Or one can use the 5V CT winding, if pressent and not otherwised used, to feed them. Two diodes and a cap for rectification, The current is 10-20 mA for these LEDs, at about 3.6VDC. The big "Luxeon Star" 1 watt LEDs consume 350 mA, I use the 5VAC CT winding, two diodes and a 1600 uF cap, and feed the LED thru a 1 to 3 ohm resistor, if needed, to limit the current. They typically run 3.3-3.6VDC at 350 mA, about 1.25 watts into a single LED. They are BRIGHT! and good for under-chassis "effect" lighting.
(4/7/05 update)
Oh, yeah, how about those old Lionel electric trains, that had the little "smoke pills" to make the locomotive look like it was "steaming", gotta add that to the "effects"... Pimp My Amp, or "Monster Amp", or how about "Ampzilla"... Yellow_Light_Colorz_PDT_05
/ed
Last edited by
EWBrown on Thu Apr 07, 2005 7:01 am, edited 1 time in total.
Real Radios Glow in the Dark