US Patent No. 10,485,072

SHUNT REGULATOR FOR SPECTRAL SHIFT CONTROLLED LIGHT SOURCE


Patent No. 10,485,072
Issue Date November 19, 2019
Title Shunt Regulator For Spectral Shift Controlled Light Source
Inventorship Zdenko Grajcar, Orono, MN (US)
Leif Erickson, Saint Paul, MN (US)
Assignee SIGNIFY NORTH AMERICA CORPORATION, Somerset, NJ (US)

Claim of US Patent No. 10,485,072

1. A method for influencing animal behaviors, comprising:providing a lighting assembly in an animal enclosure, the lighting assembly comprising driving circuitry, the driving circuitry adapted to receive an electrical excitation signal from a direct current (DC) input varied in intensity by a dimming device that actuates to increase or decrease a voltage of the electrical excitation signal, the driving circuitry including a first plurality of light emitting diodes (LEDs) in a first path in parallel relation to a second plurality of light emitting diodes (LEDs) in a second path, the first plurality of LEDs having a first threshold voltage, and the second plurality of LEDs having a second threshold voltage greater than the first threshold value, and a current limiting device within the first path;
increasing the voltage to an amount between the first threshold voltage and the second threshold voltage so that the first plurality of LEDs are emitting light of a first color, wherein the first color elicits a first behavior in an animal in the animal enclosure;
increasing the voltage to an amount above the second threshold voltage so that the second plurality of LEDs are emitting light of a second color, wherein the second color elicits a second behavior in the animal;
wherein, at the second voltage, the current limiting devices limits the current to the first plurality of LEDs.