Wirelessly Powered Tesla Desk Lamp

thingiverse

Wirelessly powered desk lamp operates at 6.5MHz frequency. Optimized coil powers a 25W "Tesla globe-style" light bulb. The design draws inspiration from Nikola Tesla's pioneering work in wireless power transmission. Featured on 3DPrint.com: http://3dprint.com/46711/tesla-desk-lamp/ Short video and explanation at https://www.youtube.com/watch?v=YBIbn9LA6PQ Designed by David Choi Instructions Power the lamp with a 30W resonant induction transmitter, preferably class D. Choose a frequency of 6.5MHz for optimal performance. My transmitter is current-mode, built into the underside of the table using an ISM band. Be sure to use a tunable transmitter and an untunable receiver. Don't resize! I used a 5th Gen Replicator to print my lamp components with a resolution of 0.2mm and 15% in-fill. Assembling parts requires CA glue in specific areas. The receiving spiral inductor consists of approximately 7.5ft of 1/8" OD copper tubing, resulting in an inductance of around 14.1uH. The primary coil is a center-tapped 1/4" copper tube with two winds and a final inductance of approximately 0.34uH. An auxiliary resonant coil enhances efficiency by improving area coverage and tuning to 6.5MHz. Power flows from the secondary coil through a copper loop coupling directly wired to the bulb. Coils and loads must be impedance matched for efficient operation. Those interested in the circuit may find it beyond the scope of this project, but feel free to ask. A vintage "Tesla globe-style" bulb reconstruction serves as tribute to Nikola Tesla's work on wireless power transmission. Using an Edison or Marconi bulb would undermine the commemorative nature of this design. One lamp leg features a built-in conduit for wiring and consists of two separate parts, ensuring easy construction if you have a functioning transmitter.