With the rapid development of science and technology, infrared cameras, as devices that can capture infrared radiation from objects and convert them into visual images, have been widely used in security monitoring, industrial inspection, biomedicine, astronomical observation and other fields.   1.Why is it necessary to perform precise temperature control on infrared cameras? For infrared cameras (especially those working in the short-wave infrared region), the image quality is easily affected by the "dark current". The dark current of the detector in the camera, such as the common InGaAs sensor, increases sharply with the increase of temperature. Studies have shown that for every 10°C increase in temperature, dark current* will increase by about 3 times. The increase in dark current will greatly reduce the sensitivity of the camera sensor and severely compres...

Most of the common electric lunch boxes on the market now do not have a cooling function. As the weather gets hotter, the food in the lunch box will become stale in less than half a day. Is it possible to make the lunch box no longer just a "heating tool" but also have the ability to keep food fresh like a refrigerator? Based on this idea, FerroTec  has launched a smart lunch box that can both heat and cool.   1. Dual use for cooling and heating: based on semiconductor refrigeration technology The reason why this smart lunch box has the refrigeration capacity that ordinary lunch boxes do not have is that its base is equipped with a semiconductor cooling plate independently developed and manufactured by Advanced TE, which connects the upper and lower heat conduction plates and achieves precise temperature control through TEC technology. • Press the heati...

Water dispensers are indispensable small appliances in homes and offices. The core component of water dispensers, the ice tank, directly determines the cooling performance of water dispensers. A high-quality ice tank can not only cool quickly, but also ensure long-term stable operation of the equipment. However, there are some problems with the traditional ice tank solutions currently available on the market, such as complex production processes and unstable refrigeration, which may cause the ice tank to have slow cooling speed, high energy consumption, and high maintenance costs. Semiconductor refrigeration (TEC) technology effectively solves these problems and also provides a more flexible and efficient cooling solution for the ice tank. Next, this article will introduce in detail the working principle, core advantages and future development trends of semiconductor refrigerati...

Recently, the annual plum rain season has arrived in the south. The floor at home is wet, clothes are still not dry after a week of hanging, and even the walls are beginning to grow mold... At this time, we urgently need a dehumidification device to solve the various problems caused by "humidity". The following new dehumidification device that integrates TEC technology - semiconductor dehumidifier, is becoming a new choice for people's dehumidification. Today we will talk specifically about its principles, advantages and common application scenarios. 1. Working principle of semiconductor dehumidifier The working principle of semiconductor dehumidifiers is based on the Peltier effect (see TEC Science Classroom Issue 1 for details) : When the semiconductor dehumidifier is powered on, the current passes through the semiconductor material, forming a diff...

As people's pursuit of quality of life continues to improve, more and more families choose to use fireplaces for heating in winter. At this time, placing a small unplugged fan next to the fireplace can make the indoor warmth much higher. This unplugged fan is called a "fireplace fan", and this warming phenomenon is essentially due to "temperature difference power generation".   1. Thermoelectric power generation principle: Seebeck effect The term "thermoelectric power generation" may sound advanced at first, but it is no longer a new technology. As early as the 19th century, German physicist Thomas Johann Seebeck discovered the principle of thermoelectric power generation - the "Seebeck effect". The Seebeck effect is the first thermoelectric effect, which refers to the phenomenon that when there is a temperature difference between the junctions of two differe...

Hello everyone, today we will mainly talk about a very critical but easily overlooked topic in the new energy field: the heat dissipation problem of IGBT modules. The "Made in China 2025" issued by the State Council clearly pointed out: "We must promote the development of new energy, smart grids and other fields, and make breakthroughs in key technologies such as high-power power electronic devices." As a core component of a variety of power electronic equipment such as photovoltaic inverters, electric vehicle electronic control systems, and industrial power supplies, the performance of IGBT (insulated gate bipolar transistor) depends to a large extent on how well it dissipates heat. So what are the mainstream heat dissipation methods for IGBT modules at present? Is there a better alternative? Let’s continue looking down. ▲IGBT (Insulated Gat...

Hello everyone, today I’m going to introduce a technology combination that sounds a bit “hardcore”: thermoelectric cooler (TEC) + photodetector. What is a Photodetector? What is a semiconductor refrigerator? Why do we need to use semiconductor coolers and photodetectors together? Let’s take a look at it together next. What is a photodetector? Simply put, a photodetector is a device that converts light signals into electrical signals. You can think of it as the "eye of light", responsible for sensing the presence and intensity of light. It has a wide range of applications, including fiber optic communications, cameras, laser printers, medical imaging, satellite remote sensing, space exploration, and so on. It can be said that as long as there is light, it is almost indispensable.   Photodetectors are very "afraid of heat" Although photodetecto...

Welcome to TEC Science Classroom! In this issue, we will give a detailed introduction to the structure, advantages and classic application scenarios of micro thermoelectric coolers.   What is a micro thermoelectric cooler? A micro-thermoelectric cooler is a small temperature control device based on the thermoelectric effect that can achieve precise heating or cooling functions. It is suitable for small electronic devices with limited space and extremely high temperature control requirements. Although the micro thermoelectric cooler is small in size, its structure is not simple. It mainly consists of two key parts:   1. Thermocouple pair (PN junction) The basic unit of TEC is a thermocouple pair composed of N-type and P-type semiconductor materials. When direct current passes through, the electrons in the N-type semiconductor and the holes in the P-type s...

Welcome to TEC Science Classroom! In this issue, we will introduce several common heat dissipation methods of thermoelectric coolers (TECs). Why do thermoelectric coolers need heat dissipation? Maybe you are curious, isn't the thermoelectric cooler used for cooling? Why is heat dissipation needed? This is closely related to its application principle: Thermoelectric coolers transfer heat through the Peltier Effect. When current passes through the junction of two different conductors, heat is absorbed or released. One side of the cooling fin becomes colder and the other side becomes hotter. In order to ensure the cooling effect, the heat on the hot side must be effectively dissipated, otherwise the heat accumulation will affect the cooling efficiency and even damage the equipment. Therefore, in the development process of thermal design, we first nee...

1. What is TEC reliability testing? TEC reliability testing refers to a testing method that comprehensively evaluates thermoelectric semiconductor cooling products by simulating actual usage conditions and environments. Its main purpose is to ensure that TEC products can operate stably and for a long time under various actual environmental conditions and meet the expected performance requirements.Through reliability testing, companies can discover potential product defects in advance and make timely improvements and optimizations, thereby improving product reliability and enhancing their market competitiveness.   2. What does reliability testing include? 1. Environmental adaptability test Including temperature testing (high temperature, low temperature, temperature cycle), humidity testing, vibration testing and shock testing ; this test is us...