Lighting Switch Circuit for Continuous Auxiliary DC Power
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Solution Overview
Problem
Conventional lighting systems require frequent battery replacements for auxiliary loads, which is burdensome, as they rely on onboard batteries for power, especially when the switch is in a position to disconnect AC power.
Innovation Solution
A switch configuration that provides direct current power to auxiliary loads even when the switch is in a position to disconnect AC power, using a power converter to convert AC power to DC power, allowing continuous power supply to auxiliary loads without the need for onboard batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If onboard batteries are used to power auxiliary loads, then auxiliary loads can operate independently of AC power, but frequent battery replacements are required which increases maintenance burden
Solution Approach 1:
The patent extracts the battery component from the system by providing continuous AC power to auxiliary loads through the switch device, eliminating the need for onboard energy storage devices and their associated maintenance requirements
Solution Approach 2:
The switch device acts as an intermediary that receives AC power and provides it to both the light source and auxiliary loads, enabling auxiliary loads to operate continuously without relying on batteries
2Device complexity
If a single switch controls both light source and auxiliary loads, then the system is simplified, but auxiliary loads cannot receive power when the switch disconnects AC power
Solution Approach 1:
The switch device segments the power distribution into separate output terminals: one terminal provides power to the light source while another terminal provides continuous power to auxiliary loads, allowing independent operation of these components
3Loss of energy
If AC power is disconnected from the lighting system, then energy consumption is reduced, but auxiliary loads requiring continuous power cannot operate
Solution Approach 1:
The switch device segments power distribution to allow the light source to be disconnected for energy savings while simultaneously providing continuous AC power to auxiliary loads through a separate terminal, enabling both energy efficiency and continuous auxiliary operation
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
Reduces the need for energy storage devices like batteries by ensuring continuous power to auxiliary loads, even when the light source is deactivated, thereby simplifying maintenance and reducing battery replacement burdens.
Implementation Method 1
using a power converter to convert AC power to DC power
Data Source
AI summary
A switch includes a first terminal, a second terminal, and a third terminal. The switch includes an output node coupled to the second terminal and the third terminal. The switch includes a contactor coupled to the first terminal and movable between at least a first position and a second position. The first terminal is coupled to the second terminal when the contactor is in the first position. The first terminal is coupled to the third terminal when the contactor is in the second position. When the contactor is in the first position, the switch is configured to provide direct current power at the output node. When the contactor is in the second position, the switch is configured to provide alternating current power at the output node.