What resistor do I need to reduce 12v dc to 6v dc?

Marv2402 (author) 2 years ago
I am using a 12volt transformer and hooking upu minature street lights in my model railroad layout. The street lights are 6 volt, so I need to reduce the voltage from the transformer.
Use a regulator, like I recommended here:

Also, if you do that, you can use a variable resistor for the lower one, and with care, make your light brightness adjustable.
You don't. Use a voltage regulator.
What's the application ?