Low-voltage systems are often identified with "smart-house"
duties, such as remote control of appliances. But the simplest
and most obvious use is for lighting. Low-voltage lighting
fixtures are powered by a transformer that lowers the voltage
and converts the current from 120 volts AC to 12 volts DC.
Compared with traditional incandescent lighting, the main
advantages of using low-voltage for lighting are more precise
focus of the light, better light quality, and lower operating cost.
Improved Beam Control
With most incandescent fixtures, only the intensity of the
light can be varied by changing the wattage of the bulb. With
most low-voltage fixtures, however, the source of light is a
halogen-filament lamp. The