Wide voltage adaptable drive and control circuit for hairdryers

Abstract

The present invention discloses a wide voltage adaptable drive and control circuit for hairdryers, which relates to the technical field of AC-DC conversion and comprises a main control-motor driver chip U, a main power module, a voltage sampling module, and a rectification mode switching module. The voltage sampling module is used to detect a voltage of at least one node in the main power module and provide feedback to the main control-motor driver chip U. The main control-motor driver chip Uis used to drive the rectification mode switching module to run based on the voltage fed back by the voltage sampling module, and to switch a running mode of a bridge rectifier sub-module BRbetween a full-wave rectification mode and a voltage doubling rectification mode. The present invention primarily addresses the problem of providing a drive and control circuit for hairdryers with wide voltage adaptability.