Hair Dryer Motor 4800-21420RPM 3-24V 1.24-9.46A For Home Appliance

Hair Dryer Motor 4800-21420RPM 3-24V 1.24-9.46A DC Motor For Hair Dryer

Lead Time

Product Description
 

Essential Details

Noise: Low Noise Level

Warranty: 3 Years

Model Number: KG-3650DC12

Rated Voltage: 3-24V

Rated Speed: 4800-21420RPM

Rated Power: 9.9-66.8W

Continuous Current: 1.24-9.46A

Place of Origin: Guangdong, China

Type: Brush DC Motor

Application: Hair Dryer, Electric Toys

Size: 50*36MM

Rated Torque: 3.8kg.cm

Drawing

Sample

Application

Motors can be constructed in several different physical configurations. In the conventional (also known as inrunner) configuration, the permanent magnets are part of the radially center core. In the outrunner (or external-rotor) configuration, the radial-relationship between the coils and magnets is reversed. The stator coils in the outrunner configuration form the center core of the motor, while the permanent magnets spin within an overhanging rotor which surrounds the core.

When the DC power supply is connected to the brush, the armature coil is energized, turning it into an electromagnet and causing it to rotate so that its north and south poles are aligned with the north and south poles of the stator, respectively. When the commutator rotates, the motion causes the polarity of the current flowing into the armature coil - and the direction of its magnetic field - to reverse. The armature rotates toward the new alignment point, the current reverses again, and the armature continues to rotate.

This way of reversing the current is called mechanical commutation - the mechanical rotation of the shaft provides the feedback needed to switch the polarity of the current.

Brush DC Motor Control

In mechanical commutation, the control of brushed DC motors is conceptually simple. Constant speed motors only need DC voltage and switches; Changing the voltage can change the speed over a wide range.

For speed control, pulse width modulation (PWM) signals can be used to generate an average voltage. The motor winding acts as a low-pass filter, so the high frequency PWM waveform will produce a steady current in the motor winding. For more accurate speed regulation, speed sensors such as Hall effect sensors or optical encoders can be added to form a closed-loop control system.

Brush DC Motor Summary

Brushed DC motors are inexpensive and reliable, and have a high torque inertia ratio. With little or no external components required, it is also suitable for operation under severe conditions.

The downside is that brushes wear and dust over time; Brushed motors require regular maintenance to clean or replace brushes. Other disadvantages include poor thermal performance (due to stator limitations), high moment of inertia, low top speed, and electromagnetic interference (EMI) from brush arcing.