CONTROL SYSTEM FOR SMOKE EXHAUSTER

摘要

A smoke exhauster includes a CPU, two motors and a switching circuit connected to the CPU. The switching circuit includes a common contact, a parallel contact for connecting the motors in parallel, and a series contact for connecting the motors in series. The common contact is connected to the parallel contact for allow higher power supply to start the motors, and the common contact is connected to the series contact for reducing power supply to the motors in order to reduce the rotational speed of the motors. The motors are connected in series after the motors are started.