Can I use my Lionel transformer for LED street and building lights.
If not what kind of power DC pack is recommended? ( for about 50 bulbs)
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If you are using the prewired LEDs with a resistor and diode, then, yes to AC. If not, as in the LED strips or individuals with only a resistor, DC is necessary. I use a PC power supply for all my lights using the 12vdc tap. At 300 watts, it will supply 1500 LEDs at 20ma each. Incandescent bulbs work fine on the 12vdc also.
thanks John
DC will be necessary I think I want to be able to dim the lights so am thinking an HO DC power supply that has a dial. Maybe MRC1370 or any othe suggestion?
I've used these in cars for HO passenger LED lights, really small so they fit.
MP1584EN DC-DC Buck Converter Adjustable Power Step Down Module Converter
I used a coin battery, holder and on-off switch placed in the doorway window area. I did these this way because the wheel sets were all plastic.
For AC 3-rail use, add a 220uf 25v capacitor and a KBP206 2A 600V generic diode bridge rectifier.
I've got some good Williams engines (E-7) and passenger cars that I'm going to do this to, because my longest set pulls about 5 amps
If you are thinking of light balancing your layout you will find that one size fits all dimming will not work since each LED type may need different driving voltage to achieve the desired illumination. I have a bunch of LED street lamps which run on AC. I use an old 1033 transformer to dim the lamps. Other LEDs I drive with fixed 12 VDC from a 33 amp Micromark power supply.
