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What is the difference between a DC fan and an AC fan?

What is the difference between a DC fan and an AC fan?
1. Working principle:
The working principle of the DC cooling fan: through the 4102 DC voltage and electromagnetic induction, the 1653 converts electrical energy into machinery to drive the rotation of the blade. The coil and IC are continuously switched, and the induction magnetic ring drives the rotation of the blade.
　　
The working principle of AC fan: It is driven by AC power, and the voltage will alternate between positive and negative. It does not rely on circuit control to generate a magnetic field. The frequency of the power supply is fixed, and the changing speed of the magnetic poles produced by the silicon steel sheet is determined by the frequency of the power supply. The higher the frequency, the faster the magnetic field switching speed, and theoretically the faster the rotation speed. However, the frequency should not be too fast, too fast will cause difficulty in starting.
　　
2. Structure composition:
The rotor of the DC cooling fan includes the fan blades of the DC cooling fan, which are the source of air flow, the fan axis, and are used to support the rotation of the balanced fan blades, the rotor magnetic ring, permanent magnets, and promote the magnetic level switching speed key, the magnetic ring frame, Fixed magnetic ring. In addition, it also includes supporting springs. Through these parts, the whole part and the motor part are fixed for the rotation of the tuberculosis, and the direction of production rotation is critical. Its speed regulating performance is good and the control is simple.
　　
The internal structure of an AC fan (single-phase) is composed of two coil windings, one is the start winding, these two windings are connected in series with each other, thus forming three points, the series point is the common end, and the start winding end is the start end operation The end of the winding is the running end. In addition, a starting capacitor is needed. The capacity is usually between 12uf and the withstand voltage is usually 250v. There are two connectors. One end is connected to the end of the starting winding, and the other is connected to the end of the running winding, forming a triangle. The power supply (no need to distinguish the live wire and the neutral wire) is connected to the end of the running winding (that is, it is also connected to one end of the capacitor), and the other is connected to the common terminal, and the grounding wire is connected to the motor casing.
　　
3. Material characteristics:
The material of the DC cooling fan is made of alloy material, and the life span can be used continuously for more than 50,000 hours. The internal structure of the DC has a transformer and a main control board (including frequency conversion circuit, rectifier filtering, amplifying circuit, etc.), which will not be affected by voltage fluctuations. Long service life.
　　
The internal structure of the AC fan is mainly a transformer. Most of the materials selected for the AC fan are made of domestic discharge needles, which are generally tungsten needles or stainless steel materials. If the voltage fluctuates too much, the service life of the transformer will be affected.
 
Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer with 20 years of R&D, production and sales experience. Main business: cooling fan, DC fan, AC fan, silent fan, centrifugal fan, blower and other full range of heat dissipation and ventilation products as an integrity enterprise, the series of cooling fan products have obtained UL, CUL, CE, CCC, ROHS, etc. International Certification.
 
Shenzhen Ruiapple Electronics Co., Ltd. was established in 2000. For 20 years, it has focused on R&D, manufacturing and sales of DC AXIAL FAN, AC AXIAL FAN, CENTRIFUGAL FAN, and blower ( BLOWER), AC to DC fan (EC FAN), DC motor (DC MOTOR), AC to DC (EC MOTOR) motor and other full series of cooling and ventilation products as a whole series of integrity enterprises.
 
Shenzhen Ruiapple Electronics Co., Ltd. has its own brand "RUIAPPLE", which is registered as a patent trademark by the government. The company passed the ISO9001-2015 system certification in the early years. The series of heat dissipation fan products have obtained UL, CUL, CE, CCC, ROHS and other international certifications.
 
Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer (manufacturing factory Mianyang Anpu Electric Co., Ltd. was established in 2009 and China Electronic Technology City Mianyang Economic Development Zone, Sichuan), with 20 years of R&D, production and sales experience. Our R&D, quality control and production always pay close attention to new technologies and new methods to pursue the goal of zero defects, continuously improve product quality and stability, improve products, innovate products, and lean production. Our product quality and production technology have always been in the forefront of the industry, with complete product specifications and comprehensive market competitive advantages.
 
Shenzhen Ruiapple Electronics Co., Ltd. has a strong R&D team, which has been dedicated to product research and development for many years, providing customers with complete heat dissipation solutions, striving for perfection, improving processes, and optimizing performance. It is targeted at consumer goods, office equipment, aerospace industry, automotive electronics, Ventilation system, machinery equipment, communication equipment and other industries conduct special research and provide products for the industry characteristics of the application of heat dissipation and ventilation products.