As time flies and the years pass, every year at the turn of the calendar—when we bid farewell to the old year and welcome the new—Jiangshan Lai always holds a “wei ya” celebration on this special occasion. The annual year-end “wei ya” dinner has long been a tradition at Jiangshan Lai Electronics Co., Ltd., and this once-a-year gathering allows everyone to feel the warmth of reuniting with their families well in advance.

According to their power supply type, cooling fans can be divided into two categories: DC fans and AC fans. However, from a physical composition standpoint, both DC and AC fans share the same basic structural components: fan blades, rotor, stator, fan frame, and bearing system. What are the structure and functions of a DC fan? Details are provided below. 1. Fan outer frame: Supports the fan motor and guides airflow. 2. Fan rotor assembly: Includes the fan blades, which are the source of airflow and serve as the axis of the fan. The rotor assembly also supports balanced fan blades, the rotor magnetic ring, permanent magnets, keys that drive the magnetic stages to switch rotational speeds, the outer frame of the magnetic ring, and the fixed magnetic ring.

When a DC cooling fan has only two power wires—a positive and a negative—during installation, the positive and negative wires of the DC cooling fan are connected in reverse. Could this cause the cooling fan to catch fire? Come take a look at what our editor has to say! A DC cooling fan has two power wires: one positive and one negative. When installing the cooling fan, if the positive and negative wires are connected in reverse, could this lead to the fan catching fire? Perhaps this issue is mainly related to the integrated circuit design used by the cooling fan manufacturer. Typically, dual-wire winding drive integrated circuits, due to their internal protection mechanisms, will short-circuit if the positive and negative power wires are connected in reverse. At this point, the current drawn by the cooling fan will be significantly higher than normal, and the motor...

DC cooling fans are widely used in our daily lives. So, what exactly is a variable-frequency motor? And does it have a close relationship with cooling fans? A variable-frequency motor shares some characteristics of DC motors but adopts an AC motor structure. In other words, although the external power supply is DC, the motor itself is equipped with DC-to-AC variable-frequency control technology, and its operation fully follows AC principles. For this reason, variable-frequency motors are also referred to as “self-controlled variable-frequency synchronous motors.” The motor’s rotational speed, n, depends on the frequency, f, set by the controller. The drive circuit of a variable-frequency motor consists of two main parts: the main circuit and the control circuit. Today, these two parts have been integrated into a single unit.

Are you familiar with DC brushless fans? Do you know the basics of DC brushless fans? Let’s find out together with the editor below! Fan parameters: First is the fan size—this primarily refers to the physical dimensions of the fan, typically expressed as the outer length and product thickness, with the unit being millimeters (mm). Fan model names often use the size as part of their designation; for example, in “DC8025,” the “8025” indicates the specific size of the product.

The Shenzhen International Electronics Show (ELEXCON) has successfully held 27 sessions to date and is one of the leading indicators of China’s electronics industry. It serves as an outstanding platform for global companies specializing in integrated circuits, electronic components, sensors, connectors, wireless technologies, power supplies, electronic materials, smart hardware, manufacturing equipment, and industry solutions to promote their brands and engage in technical and business exchanges. It is also a one-stop hub where electronics manufacturing professionals, buyers, and decision-makers can gather information and explore emerging trends and directions in the industry.

Heat dissipation can be categorized into two types: passive cooling and active cooling. Among active cooling methods, depending on the specific cooling technique employed, we have air cooling, liquid cooling, water cooling, heat-pipe radiator cooling, semiconductor thermoelectric coolers, compressor-assisted cooling, and liquid-nitrogen cooling. The operating principle of a cooling fan is based on energy conversion—electrical energy → electromagnetic energy → mechanical energy → kinetic energy. The circuit designs used in cooling fans generally come in various forms, and the performance of the fan will differ accordingly depending on the circuit configuration. Meanwhile, cooling fans are widely used due to their high rotational speed, ease of installation, and excellent cooling efficiency. The cooling method employed by miniature cooling fans refers to...