Ltpgtdeltech 12 volt dc 30va power driver led drivers are used when switching to led bulbs from halogen lamps the transformer is replaced with a led driver all low voltage lamps work best with powerdrivers for smooth non fluctuating power input providing maximum lamp life minimum light deterioration and high light colour consistencyltpgtltulgtltligtcatalog id 2586ltligtltligtquality 12v drivers designed for longevityltligtltligttriple safety cut outslt