I recently purchased the light string shown here:
The hope was to replace existing 120 V lamps in window candles with an LED light from the string, but I am having some difficulty. As I suspected when I cut off one of the lights from the string and, still fused, plugged it into the 120 v outlet, the fuses blew. So, it looks like a voltage drop is needed. The total voltage/ current of the entire 25 bulb string, according to the link above, is 0.027 amps (3.24 watts) @ 120 V. A tag on the string says that each bulb is 3.1V @ 0.062 amps. So, which approach is best:1) Use a dropping resistor for each bulb I want to use? What value and wattage if so? Would the resistor stay cool enough to hide it in the candle?
2) Use an AC plug in the wall type transformer (rated for 3.1 V AC), which I assume would be quite hard to find because most of them are DC (I tried placing 3 V DC across the LED lamp and it didn't work)?
Appreciate any help here. The candles I placed in the windows recently all use what I thought were cool, smaller standard 120 V incandescent bulbs but there was enough heating to discolor the window blinds they are up against. The wife liked the "warm white" of the LED string, so I wanted to replace the incandescents with those and I also want to use a much thinner power cord to the candles if possible, something I couldn't really get away with using the higher powered incandescent.