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As a key component in the automotive power system, the performance of the drive solenoid valve directly affects the power output, fuel efficiency, and overall operational stability of a vehicle. To ensure that solenoid valves maintain excellent performance under various extreme environmental conditions, high-low temperature cycling tests are of paramount importance. Background of High-Low Temperature Cycling Tests High-low temperature cycling tests simulate real-world conditions by repeatedly exposing solenoid valves to cycles of high and low temperatures. These tests evaluate the valves’ endurance and stability under varying temperature conditions. High-temperature tests typically simulate scenarios where vehicles are exposed to extreme heat, such as prolonged sun exposure in summer or extended high-load operation. Conversely, low-temperature tests replicate conditions where vehicles operate in cold environments, such as starting and running in winter’s low temperatures. LISUN Tempera
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In today’s automotive manufacturing industry, quality inspection is a critical step to ensure the quality and performance of products. As automotive technology advances and consumer demands for vehicle performance increase, testing methods and equipment must continually evolve. High-low temperature cycling test chambers which can simulate extreme temperature environments, have become increasingly important in the testing of automotive products. Simulating Real-World Conditions As an outdoor mode of transportation, cars often face complex and variable climatic conditions, such as the severe cold of winter and the intense heat of summer. These extreme environments pose significant challenges to the performance and reliability of vehicles and their components. High-low temperature cycling test chambers can simulate temperature environments ranging from several degrees below zero to several degrees above zero, providing a testing platform that closely mirrors real-world conditions for auto
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With the widespread use of electronic devices, electromagnetic interference (EMI) issues have become increasingly prominent. As a result, electromagnetic compatibility (EMC) testing has gained significant attention from companies. EMC testing is a complex process involving control techniques such as shielding, filtering, and grounding, as well as balancing and low-level techniques. Before addressing EMC issues, it is crucial to measure the electromagnetic characteristics of samples using testing equipment or systems to determine the appropriate improvement strategies. Challenges in RF Electromagnetic Field Radiation Immunity Testing: RF electromagnetic field radiation immunity is a critical component of EMC testing but presents several challenges for companies due to high costs associated with the required facilities and equipment. This testing requires an anechoic chamber and RF amplifier equipment. The construction of an anechoic chamber demands substantial space and structural suppo
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In recent years, the automotive industry in China has developed rapidly. However, progress in automotive electromagnetic compatibility (EMC) testing standards and regulations has lagged. Nevertheless, recent updates and new standards demonstrate that China is quickly advancing in standard development to keep pace with the automotive industry’s growth. Importance of Automotive EMC With technological advancement and the rapid growth of the automotive industry, the number of in-vehicle electronic devices has increased. Consequently, EMC design standards and regulations have become crucial. Modern vehicles are equipped with various electronic devices, such as multimedia entertainment systems, Bluetooth communication, satellite navigation, braking systems, and airbags. These systems may emit interference signals or malfunction due to high sensitivity when exposed to strong interference zones. Such malfunctions can range from minor inconveniences to severe accidents, posing a threat to life
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The UL94 horizontal and vertical burning tester is a precision device used to evaluate the combustion performance of materials. It is applicable in research, production, and quality inspection across a wide range of electrical and electronic products and components, including lighting equipment, low-voltage electrical appliances, household appliances, machine tool electrical devices, motors, power tools, electronic instruments, electrical instruments, IT equipment, office electrical equipment, electrical connectors, and accessories. This equipment is also suitable for industries involving insulation materials, engineering plastics, or other solid combustible materials. Main Testing Methods The UL94 horizontal and vertical burning tester supports five primary testing methods: Horizontal Burning Test (HB): The material is placed horizontally, and after burning for a specific duration, the burn rate and flame extinguishing time are measured. It is used to assess the flammability of materi
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A spectrophotometer is a common tool for color measurement, widely used in color evaluation, color control, color matching, and material composition analysis. This precise instrument operates by using a spectrophotometer to graphically display spectral ratios and emission curves, calculating measurement values using fixed formulas. The spectrophotometer automatically records all measured data and calculates the final results. A spectrophotometer mainly consists of four parts: • Light Source: Provides the necessary light for measurement. • Integrating Sphere: Distributes the light uniformly to ensure accurate measurement. • Grating (Monochromator): Separates the light into different wavelengths. • Photodetector: Detects and records the intensity of the dispersed light. Different brands and models of spectrophotometers may vary in measurement principles, primarily categorized into single-beam and double-beam measurement principles. Single-Beam Measurement Principle Single-beam spectropho
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The LED driver power supply is a crucial component of LED lighting systems, directly influencing the lighting effect and lifespan of LED fixtures. Thus, comprehensive and accurate testing of LED driver power supplies is essential. The LED driver power supply testing system has emerged as a specialized testing device, providing robust support for quality control and performance evaluation of LED power supplies. Key Functions Electrical Performance Parameter Testing The system precisely measures critical parameters such as input/output voltage, current, and power, evaluating the load characteristics and efficiency of LED driver power supplies. Startup Characteristics and Protection Function Testing It detects startup time, surge voltage, over-voltage protection, and other characteristics to ensure compliance with relevant standards and customer requirements. Automated Testing and Data Analysis Controlled by computer programs, the system automates the testing process, comparing test data
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