Abstract:In view of the single function of the traditional desk lamp and low security, this paper proposes a scheme to realize the LED lamp which combines the wireless power supply, the electromagnetic suspension technology and the pulse width modulation (PWM) technology. The principle of resonant electromagnetic coupling electric energy transmission is used to realize the wireless power supply. The lamp head and the base are separated by the electromagnetic suspension technology, and the control of the light is realized by using the STC12 MCU and the PWM technology. Finally, the mobile phone APP program is designed, and the HC-05 and Bluetooth technology is used to control the LED lamp’s lighting and color. Based on these technologies, a new type of magnetic levitation LED lamp has been successfully developed, and the lamp holder is suspended and rotated on the base. Lighting has the characteristics of safety and convenience, multi-level dimming and so on, and has good market prospects.