US 10,462,865 B1
Dimming control of lighting modules
Raymond George Janik, Fayetteville, GA (US); and Russell Trask, Sharpsburg, GA (US)
Assigned to Eaton Intelligent Power Limited, Dublin (IE)
Filed by Eaton Intelligent Power Limited, Dublin (IE)
Filed on Oct. 30, 2018, as Appl. No. 16/175,448.
Int. Cl. H05B 33/08 (2006.01); H05B 37/02 (2006.01)
CPC H05B 33/0845 (2013.01) [H05B 33/0896 (2013.01); H05B 33/0815 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lighting fixture, comprising:
a voltage source circuit;
a first light module comprising a first current source circuit and a first light emitting diode (LED) light source; and
a second light module comprising a second current source circuit and a second LED light source, wherein the voltage source circuit is configured to provide a voltage source output voltage to the first current source circuit and to the second current source circuit, wherein the first current source circuit is configured to provide a first current to the first LED light source, wherein the second current source circuit is configured to provide a second current to the second LED light source, wherein a first light provided by the first LED light source is fully dimmed when the first current has a minimum amplitude corresponding to a lower voltage level of the voltage source output voltage that is higher than zero volts and lower than an upper voltage limit of the voltage source output voltage, and wherein a second light provided by the second LED light source is fully dimmed when the second current has approximately the minimum amplitude.