LED Current Augmentation via Combiner Circuitry
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Solution Overview
Problem
Existing LED driver systems often fail to provide sufficient current to light emitting diodes (LEDs) efficiently, particularly when used in applications requiring higher power or flash modes, as they rely solely on the driver's output without adequate augmentation.
Innovation Solution
A combiner circuitry that combines the current from an LED driver with a secondary current source, such as a capacitor or battery, using operational amplifiers and resistors to generate an augmented current based on the ratio of specific resistor values, thereby enhancing the total current available to the LEDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If LED driver systems rely solely on driver output current, then device complexity is reduced, but current sufficiency deteriorates
Solution Approach 1:
The patent combines the LED driver output current with a secondary current from a capacitor or battery through combiner circuitry. The combiner circuitry includes operational amplifiers and resistors that merge these current sources to produce an augmented current that exceeds what the LED driver could provide alone, thereby resolving the contradiction between maintaining simple device architecture and achieving sufficient current output.
2Power
If LED driver systems use augmented current from secondary sources, then current sufficiency is improved, but device complexity increases
Solution Approach 1:
The combiner circuitry acts as an intermediary between the LED driver and the LEDs. It includes operational amplifiers and resistors that intelligently merge the driver current with secondary current from capacitors or batteries, providing current augmentation without requiring direct complex integration of multiple power sources into the LED connection, thus managing the complexity increase.
3Illumination intensity
If higher current is provided to LEDs, then illumination intensity is improved, but energy consumption increases
Solution Approach 1:
The system uses capacitors or batteries as secondary current sources that can be pre-charged before LED operation. During flash modes or high-brightness requirements, these pre-charged sources provide additional current to the LEDs through the combiner circuitry, enabling high illumination intensity without requiring the LED driver to continuously consume high energy, thus resolving the contradiction between brightness and energy consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively augments the current provided to LEDs, ensuring they receive a stable and increased power supply, which is essential for applications like flash modes or multiple LED configurations, improving their performance and reliability.
Implementation Method 1
combining, by the combiner circuitry, the first current with the second current to form an augmented current, wherein the augmented current is based on at least a first value of a first resistor and a second value of a second resistor
Implementation Method 2
The combiner circuitry may include an operational amplifier, a current controller, the first resistor, and the second resistor
Data Source
AI summary
Methods and apparatus, including computer program products, are provided for LED current generation. In one aspect there is provided a method, which may include receiving, at combiner circuitry, a first current from a light emitting diode driver circuitry; receiving, at the combiner circuitry, a second current from at least one of a capacitor or a battery; combining, by the combiner circuitry, the first current with the second current to form an augmented current, wherein the augmented current is based on at least a first value of a first resistor and a second value of a second resistor; and outputting, by the combiner circuitry, the augmented current to drive at least one light emitting diode. Related systems, articles of manufacture, and the like are also disclosed.