Patent ID: 7723862

Claim:
A power conversion device, comprising: a main body having a top and a bottom, a center axis passing between the top and the bottom; a first connector attached to the bottom of the main body and aligned with the center axis, the first connector shaped and sized to connect the main body to a first NEMA locking three pole receptacle of a street light and adapted for attachment to a nominal 120 to 480 volts alternating current line voltage; a second connector attached to the top of the main body and aligned with the center axis, the second connector including a second NEMA locking three pole receptacle of the main body electrically coupled to the first connector such that each contact of the first NEMA locking three pole receptacle of the street light is reproduced at a corresponding contact of the second NEMA locking three pole receptacle of the main body; a third connector attached to the main body at a location away from the center axis; and a power conversion circuit within the main body capable of changing nominal line voltage from the alternating current line voltage to a non-zero DC voltage for use by one or more auxiliary devices attached to the third connector, wherein the power conversion circuit provides the non-zero DC voltage continuously without any use of a timing circuit.