Abstract
This article mainly introduces the LED light source driving circuit based on UC3842 flyback circuit with SD42524 PWM dimming circuit and temperature control cooling fan based on Arduino microprocessor. The whole paper is divided into four major sections: 1. The electrical characteristics of the LED light source and its driving methods and requirements. 2. 220-36V AC-DC power supply module based on UC3842 flyback circuit. 3, SD42524 PWM dimming module. 4, based on Arduino microprocessor with a temperature sensor controlled cooling fan composed of LED cooling system. Finally, the PCB diagram of the driver circuit designed by myself and the final finished product will be displayed through pictures.
Keywords: LED driver; UC3842 SD42524 Arduino