Universal LED Lamp Circuit for Multi-Source Power
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Solution Overview
Problem
Existing LED lamps require unique circuit designs for specific power sources, leading to increased inventory costs and complexity, as they cannot efficiently operate with multiple power sources such as ballast power, alternating current voltage, direct current voltage, and inductive transfer power.
Innovation Solution
The development of an LED lamp with a circuit design that incorporates voltage regulating devices, including zener diodes and high voltage regulator ICs, along with current limiting resistors and varistors, allowing the lamp to operate with multiple power sources by regulating voltage and protecting against surges and transients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If unique circuit designs are used for each power source type, then the LED lamp can operate reliably with that specific power source, but inventory costs and device complexity increase
Solution Approach 1:
The patent implements a universal circuit design that can operate with multiple power source types (ballast power, AC voltage, DC voltage, inductive transfer power) using a single LED lamp. The circuit includes voltage regulating devices and protection components that work across different power sources, eliminating the need for separate circuit designs for each power source type and thereby reducing inventory costs and device complexity while maintaining operation reliability
2Adaptability or versatility
If voltage regulating devices are added to support multiple power sources, then power source versatility improves, but device complexity increases
Solution Approach 1:
The patent employs voltage regulating devices and protection components in a configuration that provides multi-functionality. The circuit can handle ballast power, AC voltage, DC voltage, and inductive transfer power using the same core components, thereby achieving power source versatility without requiring separate dedicated circuits for each power type
Solution Approach 2:
The circuit is divided into functional segments: voltage regulating devices for voltage control, protection devices (varistors, zener diodes) for surge protection, and current limiting resistors for current control. This segmentation allows each component to perform its specific function across different power sources while maintaining overall system simplicity
3Reliability
If protection devices are used to withstand voltage surges, then reliability improves, but device complexity and cost increase
Solution Approach 1:
The patent incorporates protection devices (varistors, zener diodes, PTC thermistors) in advance within the circuit to cushion against voltage surges and transients before they can damage the LED. These devices are pre-positioned to automatically activate when voltage exceeds safe levels, providing reliable protection without requiring complex active control systems
Solution Approach 2:
The protection devices act as intermediaries between the power source and the LED. Varistors and zener diodes clamp voltage spikes, while PTC thermistors limit current during surges, thereby mediating the interaction between potentially harmful voltage transients and the sensitive LED component
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 enables the LED lamp to function with various power sources, reducing inventory costs and ensuring consistent illumination by maintaining voltage stability and protecting against electrical surges, thus providing a versatile and cost-effective lighting solution.
Implementation Method 1
A first embodiment of the present invention uses a voltage regulating zener diode to set the voltage applied to a series string of LEDs
Implementation Method 2
The additional use of voltage reducing devices will allow the LED lamp to withstand high voltage surges from the ballast during startup, and voltage transients during normal operation
Implementation Method 3
An LED or light emitting diode is a special diode that emits light when DC power is applied
Data Source
AI summary
LED driver circuits containing voltage reducing devices, voltage regulating devices, and voltage converting devices are disclosed as the main components to provide power to LEDs. The LED driver circuits are designed to work with a ballast, mains alternating current voltage, direct current voltage, and electromagnetic induction power. The voltage regulating devices can be a resistor in series with at least one zener diode or a voltage regulator both in parallel with and providing power to the LEDs. The LEDs can also be anti-parallel diode pairs consisting of one diode and one LED or two LEDs, or the LEDs can be anti-parallel diode string pairs consisting of diodes and LEDs or all LEDs. The LED driver circuits will be incorporated into LED replacement lamps, and in particular to LED lamps to replace fluorescent lamps for use with existing ballasts and other power sources where the ballast may be removed or bypassed.