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Apr 30, 2013, 12:57 AM
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Power over fiber

Laser Power over Fiber demo - by LaserMotive (1 min 6 sec)

The intriguing part was that they used everyone's favorite indoor quad, the Syma X1 to show it could carry the required current. Unfortunately, the solar cell was too heavy. They didn't disclose the amount of power lost in the fiber, either.

To fly a Blade MCX using copper wire, it would take 30V on the ground to get 4.2V to the aircraft.

Anyways, some more tests with the Towerpro 2410-9 showed you can get more current by running the L6234 at its minimum voltage, 7V. That got it delivering 0.9A, but even temporarily feeding 2A wasn't enough to get smooth motion out of the Towerpro.

A brushless gimbal motor controller is never going to have the full capacity of the MOSFETs, since the motor is always stalled. It's always going to be dropping a huge voltage in the MOSFET, to generate a slice of a sine wave. 0.5A is probably the most you can expect, the way these controllers have only been photographed without heatsinks & they only have small molex connectors. They're better off running at 7V & higher PWM than 12V & lower PWM.
Last edited by Jack Crossfire; Apr 30, 2013 at 01:46 AM.
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