USB charger for commercial transport vehicle

摘要

An outlet provides both AC and DC power to at least one device. The outlet includes an input portion adapted to receive a first voltage input and a second voltage input wherein the first voltage input is a variable DC voltage and the second input is AC of a desired voltage and frequency. A converter reduces the first input voltage to a constant DC voltage output effective to power a PED. The outlet has a first receptacle in the form of a USB port to deliver the DC power to the device and a second receptacle to deliver the AC power to the device. A sensing circuit is coupled to the outlet and determines if a source of the second voltage may safely provide the AC power. An enabling mechanism individually activates the second receptacle dependent on the determination of the sensing circuit and first and second indicators identify to a user if the first receptacle and/or the second receptacle is activated