01-01-2009, 03:07 PM
Not sure why your are using a rectifier with the LED. Unless you are using it to get DC voltage. Like Howie1632 said it is the AC voltage that is giving you problems.
The LED is only going to work if it is forward biased. The Anode lead must be more positive that the Cathode lead.
You could use a rectifer to get the AC voltage to DC. then that could operate your LED. You will need to use a resistor on the Anode lead also.
Some where in the 1K to 750 OHM range. The problem is that with DCC there will be AC voltage at all times on your siding, unless you install a switch.
So the siding is powered at all times with DCC, and your LED will be on too.
Question? Why do you need indication of the siding beeing powered?
The LED is only going to work if it is forward biased. The Anode lead must be more positive that the Cathode lead.
You could use a rectifer to get the AC voltage to DC. then that could operate your LED. You will need to use a resistor on the Anode lead also.
Some where in the 1K to 750 OHM range. The problem is that with DCC there will be AC voltage at all times on your siding, unless you install a switch.
So the siding is powered at all times with DCC, and your LED will be on too.
Question? Why do you need indication of the siding beeing powered?