Lutron Electronics Company, Inc.

Clive Lopez

Stephen S Thompson

Graham Booth

Joel S Spira

Galen Edgar Knode

Ethan Charles Biery

Maureen E Flowers

Steve Thompson

A variable load circuit () is provided for use with a dimmer (). A low wattage load such as a LED () is provided in series with the dimmer and the variable load circuit is provided in parallel with the LED. The variable load circuit has two different load characteristics: when the applied voltage from the dimmer is below a threshold, the variable load circuit presents a fixed load (), and when the applied voltage is above a threshold the variable load circuit presents a variable load so as to act as a constant current sink. The variable load is provided by a secondary load portion () which may or may not act in combination with the fixed load (), and the secondary load portion () is switched in or out of the variable load circuit by a trigger circuit portion ().

Variable load circuits for use with lighting control devices

A load control device for controlling the amount of power delivered from an AC power source to an electrical load comprises a rotary actuator, such as a rotary knob or a rotary wheel. The load control device increases and decreases the amount of power delivered to the electrical load in response to rotations of the rotary knob in first and second directions, respectively. The load control device accelerates the rate of change of the amount of power delivered to the load in response to the angular velocity of the rotary actuator. The load control device generates a ratcheting sound when the rotary actuator is rotated in the first direction at a high-end intensity of the load control device. The load control device is operable to control the electrical load in response to both actuations of the rotary actuator and digital messages received via a communication link.

Smart load control device having a rotary actuator

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Whitehall, PA, United States of America

Clive Lopez