Buyers often ask why a levitating lamp cannot simply use a much larger LED driver. The limiting factor is the complete wireless-power chain: the base must levitate the object and transfer energy across an air gap, while the floating unit has limited space for the receiver coil, rectifier, converter and LEDs.
The power budget starts with geometry
A levitating lamp behaves like a loosely coupled air-core transformer. Coil separation, alignment, diameter and nearby magnetic material all affect coupling. Increasing the float gap generally reduces the power available at the receiver, while switching and rectification losses consume another part of the budget. Exact efficiency has to be measured on the assembled product; a single percentage cannot describe every lamp or gap.
Ordinary products and the optimized Gleagle configuration
Our confirmed engineering reference is roughly 50–100 mW at the LEDs for ordinary products. Gleagle's optimized configuration reaches up to 540 mW at the LEDs. These are electrical drive figures, not lumens, and they do not justify a blanket claim that every Gleagle lamp is 5–10 times brighter than every competing lamp.
How we reach up to 540 mW
The first part is coil optimization: transmitter and receiver geometry, ferrite shaping and resonant tuning are developed together for the intended gap. The second is a boost stage that raises receiver voltage for the LED strings, reducing coil current for a given delivered power. The third is a multi-LED series/parallel layout that distributes the electrical and thermal load while providing the required lighting effect.
These elements work as a system. A larger wall adapter alone does not solve weak coupling, and a boost converter cannot compensate for power that never reaches the receiver. Likewise, LED drive in milliwatts is only one part of visible brightness; LED efficacy, optics, color mode and thermal behavior also matter.
What buyers should compare
Ask for LED drive at the floating unit, the test gap, input conditions and the exact SKU. If visible brightness matters, compare illuminance or luminous flux under the same color mode and measurement setup. For custom projects, we confirm the final electrical and optical targets on the agreed sample rather than extrapolating a universal multiplier.
Engineering notes from our bench. The 50–100 mW reference range and up to 540 mW Gleagle figure are configuration-specific electrical values, not product-wide luminous-flux or delivery commitments.
Related reading: Wireless Power from First Principles · WPT Compensation Topologies · From 50–100 mW to 540 mW.