Wireless Power RC Car

2021-05-16

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This is an upgraded version of the wireless power transmitter from my previous video being used to power a small 3.6-volt RC car. The transmitter/receiver resonate at 100 kHz, and a bridge rectifier on the RC car feeds a DC-DC buck converter that steps the voltage down to 3.6V. The car pulls around 1 amp, so the transmitter has no problem powering it as long as it's inside the loop or within about 1 ft outside the edge.

The transmitter runs at 31V and consumes 3-4 amps depending on the load.

Harware used:

RC Car:

https://www.amazon.com/dp/B07X7MRG3F?psc=1&ref=ppx_yo2_dt_b_product_details

DC-DC Buck Converter (3.0-40V in / 1.5-35V out):

https://www.amazon.com/dp/B06XZ1DKF2?psc=1&ref=ppx_yo2_dt_b_product_details

Transmitter / ZVS Driver:

-2x IRF250 Mosfets

-2x MUR120G Diodes

-2x 13V Zener Diodes

-2x 120 uH 5A inductors

-20x 47 nF 400VAC capacitors rated at 14 mOhm ESR