Patent ID: 9750094
Date: 2017-08-29
CPC Classifications: F21S,F21V,F21Y,H02H,H05B

Claim:
1. An under-cabinet luminaire adapted to be mounted near a wall comprising: a housing adapted to fit under a cabinet with a power connector mounted on said housing; said housing containing a printed wiring board holding an array of LEDs and a switch-mode power supply configured to supply DC power to said printed wiring board and said array of LEDs; said printed wiring board containing a power control circuit with a dimmer circuit for controlling said array of LEDs, said power control circuit configured to supply a predetermined constant current to said array of LEDs as controlled by said dimmer circuit a translucent light diffuser mounted on said housing adapted to provide focused light from said array of LEDs over a working area under a cabinet; said housing having an attached Universal Serial Bus (USB) port adapted to charge batteries in accessories and a regulated USB power supply, said USB power supply having over-current protection allowing safe charging of lithium-ion batteries in said accessories; wherein said switch mode power supply includes a ferrite transformer with the following windings: a first winding of 18 turns on a ferrite core; a second winding of 135 turns on said ferrite core; a third winding of 32 turns of 3 wires on said ferrite core.