Reducing voltage

Model Railroader Electronics and DCC
1

Merry Christmas everyone! I want to install a 5-19 volt set of small LED’s for a “campfire”. It is 3 small LED’s and they come with resistors and connector wires. I tested them with a 9 volt battery and they work great. I want to place this underneith my 4 foot “modular” board and am told I need to add a 120 volt outlet to feed these LED’s. Question: What do I need to do to reduce the 120 volt down to, say 10 INPUT volts, in order to operate the small LED’s? I also have DCC wired under the board and this LED set comes with a “bridge rectifier” for DCC use. Thanks.

JRP

2

If this is a modular club layout with 120VAC outlets, just buy a 9VDC ‘wall wart’ to power it. Search eBay or just google it - I am sure you will find ones under $5 with free shipping…

Jim

3

JRP,

Jim is correct. All you should need is a 9VDC wall wart. These are often available at Goodwill or other second hand stores for a couple of bucks or so.

4

Thanks Jim and Roger.

5

Look carefully at the case. You can see the specs. Some might show, say, 110 volts to 240 volts ac. Those are ok also. Most will say about 120 vac.

Some will be ac out, some dc out.

FYI, unregulated type might show higher voltage with no load even though they say 9 volts dc. Put a load on them and they will be around nine volts.

Rich