BACHMANN E-Z DECODER P/N 44913

[jwoj69]

WITHOUT PROGRAMING, WHAT LIGHTING IS IT SETUP FOR? LIGHT BULB OR DIODE?
IF DIODE, DO I HAVE TO USE RESISTOR?

[fieromike]

WITHOUT PROGRAMING, WHAT LIGHTING IS IT SETUP FOR? LIGHT BULB OR DIODE?
IF DIODE, DO I HAVE TO USE RESISTOR?

Any led that you wire up to a decoder will require a resistor or you will see a one-time imitation of a flashbulb.  There are a load of formulas(formulae?) out there to determine the proper value of the led, but I've found that ~750 ohm has done just fine for me.

Mike

[jwoj69]

THANK YOU VERY MUCH. I TRY THIS FORMULA WITH 100% SUCSESS Rate
To find the correct resistor subtract led working voltage from your source voltage then divide by .02  use a resistor equal to that amount or greater, do not use a smaller resistor. JACK