Abstract: A wide current-and-voltage-range, precision supply circuit to conduct current (pulsed or continuous) having precisely-controlled current levels through a load is described. The supply circuit includes selectable current-sensing resistors in a feedback loop that controls current output to accommodate a wide range of currents provided to the load. The circuit can include a programmable output voltage that is applied to the load. The circuit can provide sensed voltage information from a single sensing node in the supply circuit to enable protection of the load and of power transistor(s) that conduct current through the load.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: A wide current-and-voltage-range, precision supply circuit to conduct current (pulsed or continuous) having precisely-controlled current levels through a load is described. The supply circuit includes selectable current-sensing resistors in a feedback loop that controls current output to accommodate a wide range of currents provided to the load. The circuit can include a programmable output voltage that is applied to the load. The circuit can provide sensed voltage information from a single sensing node in the supply circuit to enable protection of the load and of power transistor(s) that conduct current through the load.

Abstract: A wide current-and-voltage-range, precision supply circuit to conduct current (pulsed or continuous) having precisely-controlled current levels through a load is described. The supply circuit includes selectable current-sensing resistors in a feedback loop that controls current output to accommodate a wide range of currents provided to the load. The circuit can include a programmable output voltage that is applied to the load. The circuit can provide sensed voltage information from a single sensing node in the supply circuit to enable protection of the load and of power transistor(s) that conduct current through the load.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: An underwater light having a replaceable light-emitting diode (LED) module and cord assembly is provided. The underwater light includes a lens, a bezel, a screw, a cable attachment assembly, a mounting flange, a rear housing, a fastening assembly, an internal lens, a printed circuit board (PCB) including light-emitting diodes (LEDs) mounted thereon, a heat sink, and an electronics assembly. The assembly of the underwater light provides for the dissipation of heat away from the PCB thereby cooling the LEDs and electronic components mounted thereon. The electrically non-conductive nature of the exterior components of the underwater light permit the underwater light to be installed in any location in a pool or spa. Since the exterior of the underwater light is electrically non-conductive, no specific bonding or grounding of the underwater light is necessary.

Abstract: An underwater light having a replaceable light-emitting diode (LED) module and cord assembly is provided. The underwater light includes a lens, a bezel, a screw, a cable attachment assembly, a mounting flange, a rear housing, a fastening assembly, an internal lens, a printed circuit board (PCB) including light-emitting diodes (LEDs) mounted thereon, a heat sink, and an electronics assembly. The assembly of the underwater light provides for the dissipation of heat away from the PCB thereby cooling the LEDs and electronic components mounted thereon. The electrically non-conductive nature of the exterior components of the underwater light permit the underwater light to be installed in any location in a pool or spa. Since the exterior of the underwater light is electrically non-conductive, no specific bonding or grounding of the underwater light is necessary.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: Apparatus and methods for flexible input/output signaling over a same signaling channel are described. A programmable interface circuit includes a signaling channel that can be adapted, prior to use or during operation, for transmission and/or reception of different types of analog and digital signals. The interface circuit can be used for communications between an isolating communication controller and components of a machine that use diverse signaling types.

Abstract: An underwater light having a replaceable light-emitting diode (LED) module and cord assembly is provided. The underwater light includes a lens, a bezel, a screw, a cable attachment assembly, a mounting flange, a rear housing, a fastening assembly, an internal lens, a printed circuit board (PCB) including light-emitting diodes (LEDs) mounted thereon, a heat sink, and an electronics assembly. The assembly of the underwater light provides for the dissipation of heat away from the PCB thereby cooling the LEDs and electronic components mounted thereon. The electrically non-conductive nature of the exterior components of the underwater light permit the underwater light to be installed in any location in a pool or spa. Since the exterior of the underwater light is electrically non-conductive, no specific bonding or grounding of the underwater light is necessary.

Abstract: Apparatus and methods for flexible input/output signaling over a same signaling channel are described. A programmable interface circuit includes a signaling channel that can be adapted, prior to use or during operation, for transmission and/or reception of different types of analog and digital signals. The interface circuit can be used for communications between an isolating communication controller and components of a machine that use diverse signaling types.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: Apparatus and methods for flexible input/output signaling over a same signaling channel are described. A programmable interface circuit includes a signaling channel that can be adapted, prior to use or during operation, for transmission and/or reception of different types of analog and digital signals. The interface circuit can be used for communications between an isolating communication controller and components of a machine that use diverse signaling types.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.

Abstract: Apparatus and methods for flexible input/output signaling over a same signaling channel are described. A programmable interface circuit includes a signaling channel that can be adapted, prior to use or during operation, for transmission and/or reception of different types of analog and digital signals. The interface circuit can be used for communications between an isolating communication controller and components of a machine that use diverse signaling types.

Abstract: An underwater light including a programmable controller and a replaceable light-emitting diode (LED) printed circuit board assembly (PCBA) is provided. The light includes a controller PCBA in communication with the LED PCBA, and a connector for connecting the controller PCBA to the LED PCBA. An optically-transparent potting compound encapsulates the LED PCBA, and the LED PCBA can be safely replaced by removing a rear housing of the underwater light.