With the recent outbreak of influenza A, all kinds of thermometers have once again become an essential item for home health monitoring. The core component of the electronic thermometer commonly used at present is the temperature sensor. The working principle of the thermal sensor is to use the radiant heat effect to cause the temperature of the detection device to rise after receiving radiant energy, thereby changing the performance of the column and temperature in the sensor. By detecting a change in one of these properties, radiation can be detected. In most cases, when the device receives radiation, it causes a non-electrical physical change, and then changes it into electric quantity through appropriate changes for measurement.

To achieve an efficient and large-scale automated production mode in the manufacturing industry, a reliable, stable and efficient ATE test system needs to be used on the production line. Among them, the burn-in test system is a very common type of ATE in the electronics industry. Whether it is a component, a component, a whole machine or an equipment, aging test is required. On the one hand, it can predict the life of the product, and at the same time, it can also promote the early exposure of various potential defects hidden in the product, so as to achieve the purpose of early rejection of failed products.

【Abstract】 The equipment capacity of wind farms has expanded dramatically as the scale of wind farm construction in China has increased, and the impact on the power grid has become increasingly serious. SVG dynamic reactive power compensation device plays an important role in meeting reactive power, harmonic control, improving power factor and power quality, reducing loss, adjusting voltage and so on.

As countries around the world vigorously develop electric vehicles, auto makers and various standardization organizations have begun to establish technical development standards and define various EV tests.

To mark the fifth anniversary of the Paris Agreement on climate change, the United Nations and relevant countries held a summit on climate ambition via video on December 12. At the summit, China put forward the following proposals: "By 2030, China’s carbon dioxide emissions per unit of GDP will drop by more than 65% compared to 2005, non-fossil energy will account for about 25% of primary energy consumption, and forest storage will increase by 6 billion cubic meters from 2005, and the total installed capacity of wind power and solar power will reach more than 1.2 billion kilowatts."

Information age, the reliability of power supply is increasingly required. Especially in some key applications, such as data centers, communication base stations, etc., the stability of the power supply is directly related to the normal operation of the entire system.