Integrating Sphere | Goniophotometer | Surge Generator | ESD Simulator - LISUN

I. Introduction EFT Immunity Measurement is an interference simulation generator for electronic products and is an instrument for the quick transient burst pulse anti-interference test, as well as a kind of electromagnetic compatibility anti-interference test instrument, which is used to testthe resistance of electronic and electrical systems to quick transient interference. This quick transient burst pulse group generator includes power supply system, keyboard unit, display unit, main control unit, high voltage power supply, energy storage capacitor, main capacitor, frequency generating circuit, main switch, waveform circuit and coupling-decoupling circuit. The main control unit controls the high voltage power supply to charge the energy storage capacitor and the energy storage capacitor charges the main capacitor through the charging circuit. The main control unit generates the corresponding control signal according to the preset frequency to control the opening and closing of the

Solid insulation materials may form some conductive paths under the joint action of electric field and electrolyte, that is, leakage discharge traces may occur, and the resistance to leakage discharge traces is used to measure the insulation material's ability to resist leakage discharge traces. Therefore, resistance to leakage discharge traces is an important index for measuring insulation. Working Principle of leakage tracing test apparatus: The leakage tracing test apparatus system uses the related characteristics of electric field strength and current scale between electric potential difference signals and insulation surface, discharge state and the degree of wetting and contamination of the insulation surface to detect leakage discharge traces. First, the system builds an electric field. When there are leakage discharge traces on the surface, the system can detect the attenuation of the electric field strength and the change of electric potential difference signals, thus a

Temperature Humidity Chamber introduction: Temperature Humidity Chamber | Thermal Chamber | Climate Chamber is according to IEC60068-2-1 (GB/T2423.1) and IEC60068-2-2 (GB/T2423.2), IEC60068-2-78, IEC60598-1, GB/T2423.17, GB/T5170.2, GB/T5170.5. The climate chamber is used to test the CFL/LED which meets IES LM-80-08, electricity products, automative cars, home appications and mobiles. What is Climate Chamber? Climate chambers is used to simulate a temperature enviromental condistions, it may also be called environmental chambers or Thermal Chamber or Temperature Chamber. You can click the below videos to learn the details and also how to operate it. What are the reasons for the short life and aging of the high and low temperature test chamber? The main factors that lead to the shorter and aging of high and low temperature test chamber are the temperature, the surrounding light, and the humid surrounding environment. Therefore, LISUN recommends that the equipment is placed in an

What is An Insulation Resistance Tester? Insulation resistance tester is an important technical tool to measure the protective capacity of electrical systems. It evaluates the electrical system insulation by the application of direct current voltage on the measured insulation surface. It can be used to detect new electrical equipment failure as well as to ensure effective operation of running electrical devices. Good insulation capacity is indicated by high resistance values usually exceeding several mega-ohms (M). Poor insulation, on the other hand, can be characterized by low resistance values usually lower than 1KΩ (kilo-ohms). The pressure (voltage) used to test the insulation system is usually between 50V, 100V, 250V, 500V, 1000V and 3000V, and commonly tested using a portable insulation resistance tester, megohm meter. What problems can electrical insulation failures cause? The electrical insulation system consists of a complete system of cable insulation layers, casing insul

What is withstand voltage test? Withstand Voltage Test is a common method for testing the insulation capability of electrical appliances, electric equipment, electrical devices, and electrical circuits. Withstand Voltage Test is divided into two types: AC Withstand Test and DC Withstand Test. The former uses test voltage several times higher than the rated voltage of the tested product, while the latter observes the value of leakage current under different voltages to draw the current-voltage characteristic curve for analysis. The application period of high voltage for different insulation components is also different, such as ceramics and liquid insulation using 1 minute of high voltage pressure; organic solid insulation using 5 minutes; voltage transformer using 3 minutes; and oil-immersed power cable using 10 minutes. Withstand Voltage Test can detect insulation issues, dampness, and aging phenomena of electrical equipment. This type of test is very important and it is necessary

Introduction Digital oscilloscopes have revolutionized the electronics industry by allowing precise measurement and analysis of electrical signals for design and troubleshooting purposes. Although learning to read fundamental waveforms on a digital oscilloscope is important, understanding sophisticated measuring methods may greatly expand the instrument's usefulness. In this post, we'll look at how digital oscilloscopes may be used for a wide range of sophisticated measuring applications. We'll investigate concepts including frequency analysis, fast Fourier transform (FFT), mask testing, pulse and edge measurements, and eye diagram analysis. Engineers may get more insight into electronic systems and improve their accuracy and performance by mastering and using these cutting-edge measuring methods. Frequency Analysis and Spectrum Analysis Using the frequency analysis functions of a digital oscilloscope, engineers may investigate the spectral characteristics of the

What is A Ball Pressure Test  Ball Pressure Test is a safety regulation test to examine the heat-resistance performance of product materials. The temperature of the test is usually 125℃ and it is mainly aimed at increasing the product safety. The ball pressure test is to press the surface of non-metallic and non-ceramic materials at high temperatures using a ball pressure tester to detect the sample’s viscosity, adhesion, melting point, and corrosion resistance at high temperatures to verify whether it can resist the damage caused by high temperature environment and so that it can meet the safety requirements of safe operation. Ball pressure test is a necessary means to enhance safety and is an important technical means in safety regulation tests, which has significant practical significance. The ball pressure test is a device designed to test the heat-resistance performance of household plugs and sockets. It can simulate the plug and socket unplugging and re-plugging into the powe

The rapid temperature change test chamber is suitable for testing various performance indicators of products in aerospace, information electronics, instruments and meters, materials, electrical engineering, electronic products, and various electronic components under rapid temperature changes. The rapid temperature change test chamber is mainly designed for the adaptability testing of electrical and electronic products, as well as other raw materials for storage, transportation, and use in high-temperature and low-temperature rapidly changing environments. Eight characteristics of a rapid temperature change test chamber: 1. The structure adopts a jacket free and modular design concept, with a simple appearance and ideal assembly method. The compact chamber structure is extremely convenient for maintenance and use. 2. The outer shell is made of cold-rolled thin steel plate, with a surface sprayed with plastic, which is beautiful and durable. The inner chamber adopts stainless st

Ozone Test Chamber is a kind of testing equipment used for aging test of rubber materials with ozone. It is widely used in rubber aging test, mainly for vulcanized rubber, thermoplastic rubber, cable insulation protection sleeve, electrical shell and other rubber products. LISUN Ozone Test Chamber (or called Ozone Aging Chamber and Ozone Aging Test Chamber) is design according to rubber being sensitive characteristic of to ozone, it simulate the environmental to accelerate the rubber aging process by ozone. It compared to different products(test sample) aging result each other according to the same ozone aging test conditions/standards, and get to comparable aging resistance performance. I. Principle of Ozone Test Chamber The vulcanized rubber or thermoplastic rubber samples are exposed to air with constant ozone concentration and constant humidity in a sealed test chamber under static tensile strain conditions, and cracked condition of samples is checked according to predetermined

What is Leakage Current? Leakage current is the current flow going through a piece of insulating material when certain voltage is applied. It can be used to estimate insulation resistance in power systems, since almost none insulation material can be 100% nonconductive. The flow of leakage current indicates the losses of voltage in insulator, thus the determination of its insulation performance can be made. The principle of measurement: After applying a direct current voltage to the test equipment, the microameter will record the gradual attenuation of the charging current in a certain period of time, and the final reading roughly reflects the leakage current. To ensure the reliability of the test results, repeatability measurement and control of the test environment conditions can be taken. Leakage current tester is a very useful electrical testing tool, which helps users detect and find out electrical safety hazards, and ensure its safe operation. This tester is widely applied

The colorimeter and glossmeter developed and produced are optical testing instruments. The reason why these instruments can measure the color difference, gloss, chromaticity, and image clarity of various products is due to the optical principles of their internal design. Learning optical knowledge is very helpful for the use and analysis of color difference meters and glossmeters. People can see that color and light density are inseparable. Only in the visible spectrum can we clearly see color through the naked eye. Generally, the wavelength of visible light that the human eye can feel is 400 nm (purple) to 700 nm (red), and the visible spectrum is a small part of all electromagnetic spectrum. There are thousands of colors in the world, among which red, green, and blue are known as the three primary colors. Changes in the ratio of red, green, and blue can produce multiple colors, and equal mixing of the three can reproduce white. The concept of complementary color: The color formed

The ozone aging test chamber is an essential testing equipment in the rubber industry, used to test the ozone aging resistance test performance of products. According to different customer test requirements, we can also be divided into static and dynamic two types. What precautions should be taken when installing an ozone aging test chamber? 1. Site conditions The site for installing the ozone aging test chamber requires a flat ground and good ventilation; There are no strong electromagnetic waves around; No strong vibration; There should be no flammable, explosive or corrosive substances or dust around the equipment. 2. Power supply conditions The required power supply voltage for the ozone aging test chamber is 380V ± 10% 50 ± 0.5Hz three-phase five wire system. Note: Users need to equip the test chamber with air or power switches of corresponding capacity at the installation site, and this switch can only be used separately by this equipment 3. Environmental conditions

Introduction In contemporary cars, electronics play an increasingly important part in the vehicles' performance, safety, and comfort. Accurate testing and diagnostics are of the utmost importance as automotive systems continue to develop. Here, we'll explore how digital oscilloscopes are used for testing electronics in cars. We will delve into the special difficulties of this field, talk about the specifics of automotive testing, and emphasize the importance of digital oscilloscopes in the diagnosis, troubleshooting, and optimization of automotive electronic systems. Automotive Electronics Complexity Over the last several years, there has been a significant increase in the level of complexity seen in the electrical systems used in vehicles. It is essential to thoroughly monitor and test everything, from the engine control modules and powertrain systems to the infotainment and advanced driver-assistance systems (ADAS). By analyzing electrical waveforms and collecting c