Abstract: A power conversion unit converts an AC voltage into substantially constant DC current. The power conversion unit can be placed into an end cap of an LED lighting unit, to power LED modules. The power conversion unit uses capacitors and a bridge rectifier to perform the power conversion. The capacitors and bridge rectifier are selected to configure the power conversion and to produce the desired variable voltage substantially constant DC current.

Abstract: An LED module provides one or more LEDs mounted in a circuit board assembly, which circuit board assembly includes first and second conductive areas located at each end of the circuit board assembly to attach to electrical connectors mounted on branch wiring to extend to branch LED modules.

Abstract: An LED module provides one or more LEDs serially mounted with a circuit board assembly. A substantially constant current power source is operably connected to a power supply and to the plurality of LEDS, whereby each of the LEDs emits light at a substantially uniform level of brightness. In one embodiment, the LED may be mounted on a separate board from the power supply. A system of LED modules can be constructed from multiple LED modules, each producing a substantially uniform predetermined level of brightness. The system of LED modules may be electrically disconnected from each other.