Posts

Image
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
Post a Comment
Read more
Image
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
Post a Comment
Read more
Image
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
Post a Comment
Read more
Image
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
Post a Comment
Read more
Image
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
Post a Comment
Read more
Image
In fields such as color management, quality control, and product development, color accuracy is crucial for ensuring product quality and meeting customer expectations. Spectrophotometers, as highly accurate and efficient color measurement tools, play an indispensable role in these areas. Working Principle of Spectrophotometers Spectrophotometers operate based on spectral and photoelectric conversion technologies. Initially, they emit white light through a light source, which is then separated into monochromatic light of different wavelengths using a grating or prism in the spectrophotometer. This monochromatic light is then directed onto the sample under test. The sample absorbs, reflects, or transmits parts of the light depending on its physical and chemical properties. Finally, a photodetector within the instrument receives this light and converts it into electrical signals. Through signal processing and analysis, the spectrophotometer derives accurate color information from the samp
Post a Comment
Read more
Image
A power parameter tester, also known as an electrical parameter measurement device, is primarily used for measuring various electrical parameters of instruments and equipment, including voltage, current, power, and power factor. It encompasses different types such as digital power parameter testers, single-phase power parameter testers, and three-phase power parameter testers. Among these, digital power parameter testers, characterized by compact size and stable quality through surface-mount technology, feature rich interface and measurement capabilities. They can comprehensively measure parameters such as harmonics, PWM waveforms, and no-load losses, meeting the requirements for laboratory testing of power frequency products. Types and Applications Digital Power Parameter Testers: • Single-phase: Widely used for measuring devices like televisions and transformers. • Three-phase: Suitable for parameter measurement in three-phase instruments such as motors. • AC, DC, and AC/DC Power Par
Post a Comment
Read more