Murata Manufacturing Co., Ltd.

Hayward Industries, Inc.

Murata Power Solutions

Joseph Gonsalves

Alexander Asinovski

Kevin L Potucek

Gilbert Conover

Carl L Brunetti

Conor Rochford

Lloyd Slonim

Paul Canavan

A power converter system includes first and second input terminals; a converter connected to the first and second input terminals and including an output terminal; a start-up circuit connected to a first capacitor and configured to charge the first capacitor during start-up and hiccup conditions; a voltage source connected to the first and second input terminals and configured to provide, during the start-up and hiccup conditions, a voltage proportional to a voltage applied to the first and second input terminals; and a voltage buffer including a MOSFET with a gate connected to the voltage source, a source connected to the start-up circuit, and a drain connected to one of the first and second input terminals.

Start-up regulator for high-input-voltage power converters

The present disclosure relates to a programmable underwater lighting system for pools and spas. A plurality of underwater lights, each having a plurality of LEDs for producing light of various colors, a microprocessor for controlling the plurality of LEDs, and a memory in communication with the microprocessor containing one or more stored control programs, allow for the generation of various lighting effects in a pool or spa. A central controller is provided in communication with the plurality of underwater lights, and allows a user to define or select a desired lighting effect (such as a sequence, a fading effect, a 'moving' color pattern, etc.) using a display and a keyboard. Optionally, a handheld remote control could be provided, in wireless communication with the central controller, for allowing a user to remotely control the plurality of lighting fixtures. When a desired lighting effect is defined by a user, the central controller transmits an instruction to each of the plurality of underwater lights instructing each light to execute a specific stored control program in its memory to produce the desired lighting effect. Each of the lights could be in communication with the central controller using a power line and an associated power line carrier data protocol, and each light could be provided with a thermal management system for monitoring the operating temperature of the light and automatically adjusting the brightness of the light to prevent dangerous temperatures.

Programmable underwater lighting system

A start-up circuit includes a switching-device control circuit arranged to receive an input voltage and to provide a switching-device control signal, a switching device arranged to be controlled by the switching-device control signal and to provide a start-up signal, a power-converter control circuit arranged to receive the start-up signal and to provide a power-converter control signal, and a power converter arranged to receive the power-converter control signal and to provide an auxiliary output signal. The switching control circuit is arranged to receive the auxiliary output signal such that, when the auxiliary output signal reaches a predetermined level, the switching-device control circuit stops providing the switching-device control signal.

Start-up circuit for power converters with wide input voltage range

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Warren, RI, United States of America

Joseph Gonsalves