Abstract: LED systems with a multi-channel direct current power supply unit. The system has a first circuit in electrical communication with a first channel of the power supply and a second circuit in electrical communication with a second channel of the power supply. The power supply provides a constant current to the first and second circuits. The system has a third circuit in electrical communication with the ground of the power supply. A plurality of driverless luminaires are connected in series wherein each driverless luminaire has a first LED array electrically connected in series to the first circuit and a second LED array electrically connected in series to the second circuit and a driverless luminaire ground electrically connected to the third circuit.

Abstract: LED systems with a multi-channel direct current power supply unit. The system has a first circuit in electrical communication with a first channel of the power supply and a second circuit in electrical communication with a second channel of the power supply. The power supply provides a constant current to the first and second circuits. The system has a third circuit in electrical communication with the ground of the power supply. A plurality of driverless luminaires are connected in series wherein each driverless luminaire has a first LED array electrically connected in series to the first circuit and a second LED array electrically connected in series to the second circuit and a driverless luminaire ground electrically connected to the third circuit.

Abstract: A group of LED fixtures formed in rows wherein power is delivered to each fixture in the group from a central power unit thus eliminating the necessity of providing a separate power source for each fixture. A circuit is provided to protect the LEDs from excessive temperatures that may result in fire hazards and to bypass a row if an open circuit is detected in the row.

Abstract: A group of LED fixtures wherein power is delivered to each fixture in the group from central power unit thus eliminating the necessity of providing a separate power sauce to each fixture.

Abstract: A group of LED fixtures wherein power is delivered to each fixture in the group from central power unit thus eliminating the necessity of providing a separate power sauce to each fixture.

Abstract: A light system for growing plants indoors comprising a light source mounted on a single, two sided FR4 based PCB board.

Abstract: A light system for growing plants indoors comprising three light sources each having a different range of wavelengths, power being applied to each light source at an intensity, combination and sequence determined by the growing properties of the plants.

Abstract: A light system for growing plants indoors comprising a light source mounted on a single, two sided FR4 based PCB board.