In today's rapidly developing digital age, laptop has become an important tool in our life and work. However, as we all know, high performance also brings a headache of heat dissipation. Don't worry, our cooling fans will provide you with the perfect solution.

Our team of engineers is committed to solving the problem of laptop overheating at its root, and this cooling fan model D08025B is the best example.

Precise temperature control function

Our products are equipped with advanced temperature control technology to accurately monitor and adjust the temperature of your laptop. In this way, it can automatically adapt to different loads and use environments, and adjust the fan speed as needed to ensure that the temperature of the laptop is always within the safe range. And we use DC motors, which have the ability to limit overload, ensuring that the motor will not overload when it exceeds its capacity. You no longer have to worry about performance degradation or damage caused by overheating, our cooling fans will provide you with reliable protection.

Light and portable

When we made the cooling fan, we carefully considered that the notebook needs to be portable, so we adopted a compact design, which is suitable for notebook computers of various sizes. Whether you use it at home, in the office or on the go, this fan is easy to adapt and provides you with long-lasting heat dissipation.

High quality materials and quiet design

We are committed to providing high quality products and our cooling fans are made of high quality materials to ensure stable performance and long life. In addition, we also focus on quiet design, so that you enjoy a quiet work and play environment. Whether you need high performance cooling or quiet operation, our cooling fans have you covered.

Compared to traditional cooling fans, our products have excellent applicability and are especially optimized for the special needs of laptops. Whether you are on a daily basis or engaged in intensive gaming and multimedia tasks, our cooling fans provide excellent performance and reliable cooling. Whether you are a regular user or a professional user, this fan meets your needs for a cooling solution.

Guangdong Chungfo Electronic Technology company is a wholesale cooling fan manufacturer, whether it is high speed exhaust fan, brushless fan, or double ball bearing exhaust fan we have, welcome major buyers to come to purchase consultation.

Cooling fans play a crucial role in electronic equipment, servers, industrial equipment and other fields. For different use needs, there are two main types of 3-Pin (3-pin) and 4-Pin (4-pin) fans on the market, and their main difference is the speed regulation mode - 3-pin fan speed regulation by voltage, while 4-pin fan uses PWM (pulse width modulation) speed regulation. So, what are the advantages and disadvantages of these two speed regulation methods? This article will explain it in detail.

Features of 3-pin fan (voltage adjustable speed)

The 3-pin fan, which is more common in traditional cooling solutions, controls the speed of the fan by adjusting the input voltage. Typically, the motherboard or fan controller lowers the voltage to reduce the fan speed, thus reducing noise.

Advantages:

simple structure, low cost, suitable for common heat dissipation requirements.

 is directly compatible with most motherboards without a special PWM controller.

 is suitable for the 2800 RPM exhaust fan, which provides stable heat dissipation under high voltage.

Cons:

 The speed regulation precision is low, can not achieve linear adjustment.

 Low voltage may cause fans to fail to start or stop, which affects heat dissipation.

 The startup voltages of different fans may vary, which may cause compatibility problems.

Features of 4-pin fan (PWM speed regulation)

On the basis of the 3-pin fan, a Pulse Width Modulation (PWM) signal line is added to the 4-pin fan, which adjusts the fan speed by changing the duty cycle of the PWM signal, while the supply voltage of the fan remains constant.

Advantages:

 Precise control of fan speed, wide speed range, more suitable for intelligent temperature control system.

 Since the fan always operates at rated voltage, startup problems that may result from low voltage are avoided.

PWM signal can independently control multiple fans, so that they operate simultaneously, improve heat dissipation efficiency.

 For "double ball bearing exhaust fans", PWM control can effectively reduce fan wear and improve service life.

Cons:

 The price is relatively high, and some old motherboards may not support PWM speed regulation.

 Requires the motherboard or fan controller to support PWM signals, otherwise it will not be able to take advantage of it.

Chungfo Electronics focus on cooler exhaust fan wholesale, if you have purchase needs, please feel free to contact us.

In a high temperature environment, we sometimes encounter the problem that the cooling fan cannot run, which poses a certain threat to the heat dissipation performance and stability of the device. We Chungfo as a more than ten years of experience in the ac exhaust fan wholesale manufacturers will lead you to explore the cooling fan in the high temperature environment can not operate several possible reasons.

1.Overheating protection: Many double ball bearing exhaust fans have overheating protection. That is to say, when the ambient temperature exceeds the fan's tolerance range, the fan will stop running to prevent overheating damage.

2.Lubricating oil failure: under high temperature environment, the lubrication effect of lubricating oil will be greatly reduced, which leads to the bearing wear of some high rpm exhaust fans, and the fan will stop operating at any time.

3.Thermal expansion and cold contraction lead to deformation: The plastic parts of the brushless exhaust fan will produce thermal expansion and cold contraction in a high temperature environment, resulting in component deformation and affecting the normal operation of the fan.

4. Frequency regulation: In high temperature environments, some bldc exhaust fans may control the temperature by reducing the operating frequency. This means that their rotational speed slows down, which reduces heat dissipation. If the temperature is too high, the fan may stop running to protect itself.

If you have the need to buy high quality mini axial cooling exhaust fans, please feel free to contact us!

Temperature control cooling fan is a kind of intelligent fan, take our double ball bearing exhaust fan as an example, its built-in temperature sensing element, can automatically adjust the speed and rotation of the fan according to changes in ambient temperature. So, how exactly does this amazing temperature sensor work? Here is a brief introduction for you.

Temperature sensing elements usually use thermistors, thermocouples or thermistor capacitors and other devices. Taking a thermistor as an example, it is a resistance composed of a special material, and its resistance value changes with the increase or decrease of temperature. When the ambient temperature increases, the resistance value of the thermistor will decrease. When the ambient temperature decreases, the resistance value will increase.

When the temperature sensing element is placed in a key location of a c, such as a radiator or inside the case. When the ambient temperature rises and exceeds the preset temperature threshold, the temperature sensing element senses the temperature change and then transmits the signal to the fan control circuit.

Chungfo is specialized in high rpm exhaust fan Wholesales, but also do the high speed exhaust fan Wholesale, if there is a need to buy exhaust fans, you can contact us at any time!

Follow up the previous blog to discuss how GPIO reads the fan tach signal

 

4, configure the GPIO pin as the input mode to prepare to read Tach signals. This can be achieved by using appropriate programming languages and libraries. For example, you can use the RPi.GPIO library for Raspberry PI.

5. Read the status of GPIO pin to obtain Tach signal. Depending on the programming language and library you choose, you can use the appropriate function or method to read the GPIO state. If the status changes, the fan speed changes.

 

6, please note that the specific implementation details may vary depending on the hardware platform, fan, and programming language used. Be sure to refer to the relevant hardware and programming documentation for accurate configuration and usage.

Choose Chungfo Electronic Technology Co., LTD., you will get the most advanced double ball bearing exhaust fans, as well as quality high temp exhaust fan wholesale services and a variety of mini exhaust fan wholesale options. We are committed to providing the best cooling solution for your project!