DC / DC car regulated adapters work with a variety of mobile devices such as radios, television sets, CD players, computer equipment and GPS. They are used in places where mains power is not available (eg. in the car, outdoors, on boats and yachts).. DC/DC car regulated adapters from the series CA - 7000 have got an electronically protected output. They are well regulated to protect the powered device against fluctuations in the electrical system of the car. The maximum load of this model is 500 mA.