LED Lighting Switching Deactivation Circuit
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Solution Overview
Problem
Switching DC power sources for LED lighting systems consume excessive power when not in use due to inefficiencies in switching operations, leading to increased energy wastage and potential power transients during activation and deactivation.
Innovation Solution
A discrete voltage regulating circuit with a switching device and a switching device deactivation circuit, where a switch is positioned between the voltage reference source and ground, allowing for reduced power consumption by driving the switching device to a state that minimizes power usage when light is not requested, and controlling the shutdown process to prevent power transients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a switching DC power source is used to supply power to LED lights, then operational efficiency during illumination is improved, but power consumption increases when lights are turned off
Solution Approach 1:
The deactivation circuit is activated in advance before the main switching device turns off, pulling the reference voltage to ground to ensure the switching device remains deactivated and prevent any residual switching activity that would consume power
2Power
If switching operations are performed in the DC power source, then efficient power delivery to LEDs is achieved, but power transients occur during activation and deactivation
Solution Approach 1:
The deactivation circuit pulls the reference voltage to ground in advance before the main switching device operates, creating a preemptive condition that prevents the switching device from activating, thereby counteracting potential power transients before they can occur
3Speed
If the switching device remains active to maintain readiness, then quick activation is possible, but continuous power consumption occurs
Solution Approach 1:
The deactivation circuit is engaged in advance to pull the reference voltage to ground, ensuring the switching device is preemptively deactivated. This eliminates standby power consumption while maintaining the ability to quickly activate the system when needed by simply releasing the deactivation signal
Data Source
AI summary
A system and method for operating one or more light emitting devices is disclosed. In one example, the switching of a regulator is ceased in response to a request to stop supplying power to one or more light emitting devices. The approach may reduce power consumption of a lighting system when light is not requested.