Title:
LED FEEDBACK DRIVING CIRCUIT AND LED DIGITAL FEEDBACK DRIVING CIRCUIT
Document Type and Number:
Japanese Patent JP2023053859
Kind Code:
A
Abstract:
To provide an LED digital feedback power circuit that is resistant against varying loads of AC voltage, suppresses flicker or noise generation of harmonic waves, and consumes less power.SOLUTION: An LED driving circuit drives an LED unit including a plurality of LEDs connected in series and includes a power source unit that rectifies all the waves of commercial AC (voltage) and supplies driving voltage to the LEDs. The LED unit is divided into a plurality of LED groups between an input side and an output side, each group including one or more LEDs. One end on the power source unit positive side is connected to an input end of the LED unit, and one end on the output side of a plurality of driving transistors is connected to an output end of another LED group in the LED unit.SELECTED DRAWING: Figure 1
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Inventors:
FUJIMOTO TAKAYOSHI
Application Number:
JP2021176957A
Publication Date:
April 13, 2023
Filing Date:
October 02, 2021
Export Citation:
Assignee:
KAKI CO LTD
International Classes:
H05B45/48; H05B45/345; H05B45/36; H05B45/37; H05B45/40