LED LIGHTING SYSTEM Russian patent published in 2017 - IPC H05B33/08 

FIELD: lighting.

SUBSTANCE: power supply circuit is equipped with input terminals (K1, K2) to communicate with the power supply source and the first and second output terminals (K3, K4) and the driving circuit (I, II) connected between the input terminals and the first and second output terminals to generate the LED current. The drive circuit (I, II) comprises an excitation control circuit (II) equipped with an input terminal (K7) to increase or decrease the LED current, depending on the presence of a signal at the input terminal of the excitation control circuit. One or more LED modules comprise the first and second input terminals (K5, K6) to communicate with the first and second output terminals of the power supply circuit respectively, serial arrangement (LS) of the LED load, and the current sensing unit (R1) connected between the input terminals, a control circuit of the module for current control signal generation at the output terminal of the module control circuit which is connected to the current sensing unit and to a reference signal generator (R3, R4, R5, Z1) to generate a reference signal representing the desired LED current value. The current control signal has the first value, if the desired LED current is lower than the measured value of the LED current, and the second value, if the desired LED current is higher than the measured value of the LED current and the circuit (D1; Sg, DC, C1, C2) connected during operation between the output terminal of the module control circuit and the input terminal of the drive control circuit for transmission of the first value of the current control signal to the input terminal of the drive control circuit and for blocking of the second value, wherein the signal at input terminal of the drive control circuit has a default value when all current control signals have their second value.

EFFECT: simplified light-diodes lighting system.

13 cl, 7 dwg