Why are electric hair dryers divided into direct current motors and alternating current motors? What are their differences?
AC series motor electric blower is better, it is the working voltage of AC 220V, he and the electric heating wire in the circuit has no other connection, hair dryer can be cold and hot air. The DC motor is usually through a fine wire step-down rectifier drives a small motor, electric wire must work to motor work, it cannot provide separate cold, DC motor AC motor with low cost, high cost.
AC motor: wind, make the sound small, more durable, hot and cold big difference, large volume, stable current to prevent overvoltage protection AC fever dead machine, most hair dryer is now all communication, have built-in motor protection diode
DC motor: fast speed, light weight, simple structure, easy to damage, big sound making
