US 12,526,891 B2Granted

Zener transistor controlled LED array

AssigneeVode Lighting LLC

InventorLee Henderson

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Abstract

The present disclosure relates generally to an electronic control circuit and means to provide balanced power to a plurality of light emitting diodes (LEDs) connected in arrays for improved efficiency, luminosity and power management. The present disclosure further relates to the use of an improved multiple transistor-based electronic control circuit offering significant improvement in regulating voltage and current flow to a plurality of LEDs connected together in various combinations of serial blocks and parallel blocks. The present disclosure further relates to the use of a Zener diode that offers significant improvement in regulating the luminosity of a plurality of LEDs connected together in various combinations of serial blocks and parallel blocks, wherein the LED blocks contain an arrangement of an even number of LEDs, an odd number of LEDs, as well as even and odd numbers of blocks combined in serial and parallel arrangement, and combinations thereof.

Claims9

Dependent claims

An electronically configured control circuit for controlling the dimming and lighting of an associated light emitting diode in a luminaire, comprising:

(a) a control circuit;
(b) a direct current (DC) power source providing a high potential positive voltage pole (V+) and a low potential negative ground voltage pole (V−);
(c) a plurality of light emitting diodes (LED);
wherein at least one high potential node of said control circuit is electrically coupled to the positive voltage pole (V+) of said DC power supply;
wherein at least one low potential node of said control circuit is electrically coupled to the negative voltage pole (ground) of said DC power supply;
wherein the high potential node of said control circuit is electrically coupled to V+ and at least one high potential node of at least one LED;
wherein a first emitter of a first transistor (Q1) is electronically coupled to said low potential node of said control circuit and coupled to a second collector of a second transistor (Q2);
wherein a first collector of said Q1 is electronically coupled to a second base of said Q2;
wherein a second emitter of said Q2 is electronically coupled to a low potential node of a first resistor (R1);
wherein a first base of said Q1 is electronically coupled to a high potential node of said R2, a high potential node of a second resistor (R2), a low potential node of a third resistor (R3) and a low potential node of a fifth resistor (R5);
wherein a low potential node of the second resistor (R2) is electronically coupled to said low potential node of said control circuit;
wherein a high potential node of said R5 is electronically coupled to a low potential node of a Zener diode (Z1);
wherein a high potential node of said Z1 is electronically coupled to a high potential node of said R3, a low potential node of a sixth resistor (R6) and a high potential node of a seventh resistor (R7);
wherein a high potential node of said R1 is electronically coupled to a low potential node of said R7;
wherein the high potential node of both said R3 and said R7 are electronically coupled to the low potential node of said R6;
wherein a high potential node of said R6 is electronically coupled to a low potential node of said R4;
and
wherein a high potential node of said R4 is electronically coupled to a positive side of the DC power source.

15 more elements

An electronically configured control circuit for controlling the dimming and lighting of an associated light emitting diode in a luminaire, comprising:

(a) a control circuit;
(b) a direct current (DC) power source providing a high potential positive voltage pole (V+) and a low potential negative ground voltage pole (V−);
(c) a plurality of light emitting diodes (LED);
wherein at least one high potential node of said control circuit is electrically coupled to the positive voltage pole (V+) of said DC power source;
wherein at least one low potential node of said control circuit is electrically coupled to the negative voltage pole (ground) of said DC power source;
wherein the high potential node of said control circuit is electrically coupled to V+ and at least one high potential node of at least one LED;
wherein a first transistor (Q1) has a first collector that is electronically coupled to a second base of a second transistor (Q2);
wherein a first emitter of Q1 is electronically coupled to ground;
wherein a first base of Q1 is electronically coupled to a high potential node of a first resistor (R1);
wherein a low potential node of R1 is electronically coupled to ground;
wherein the first base of Q1 is electronically coupled to the high potential nodes of a second resistor (R2);
wherein a second collector of Q2 is electronically coupled to ground;
wherein a second emitter of Q2 is electronically coupled to a low potential node of a third resistor (R3);
wherein a high potential node of R3 is connected to a low potential node of a fourth resistor R4;
wherein a low potential node of R4 is electronically coupled to ground;
wherein a high potential node of R4 is connected to V+;
wherein a high potential node of a fifth resistor (R5) is connected to V+;
wherein a low potential node of R5 is connected to the high potential note of R1;
wherein a low potential node of a sixth resistor (R6) is electronically coupled to the high potential node of R2;
wherein a high potential node of R6 is electronically coupled to a first anode of a first Zener diode Z1;
and
wherein a first cathode of Z1 is connected to V+.

19 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/206,054Filed 5 Jun 2023
Published: US 2024/0407063 A15 Dec 2024
Granted: 13 Jan 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H05B 45/35
Driver circuits: balancing circuits
H05B 45/395
Driver circuits: linear regulators
H05B 45/46
With an active control inside an LED matrix: having LEDs disposed in parallel lines
H05B 45/48
With an active control inside an LED matrix: having LEDs organised in strings and incorporating parallel shunting devices