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1 Introduction The DC resistance test of transformer windings is one of the main items of transformer factory and preventive testing. According to the IEC standard and the national standard GB10...[Details]
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The main factors that can cause the measurement failure of gas ultrasonic flowmeters during use are dirt in the pipe, such as mud, oil, rust, dust, water, etc., especially stagnant water. In order to...[Details]
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Well-known blogger @数码闲聊站 previously revealed that OPPO will launch a folding screen mobile phone, named OPPO Find N. Compared with the N series 7 years ago, this phone is more like a flagship. This ...[Details]
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Power spectral density (PSD) is usually measured in Vrms2 /Hz or Vrms/rt Hz (where rt Hz is square root hertz). Alternatively, PSD can be measured in dBm/Hz. Spectrum analyzers can measure power spec...[Details]
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China is a major producer and consumer of lighting products in the world, with the output of energy-saving lamps and incandescent lamps ranking first in the world. Stimulated and encouraged by gove...[Details]
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introduction As the most basic processing component in applications such as speech and image processing, pattern recognition, radar signal processing, and spectrum analysis, digital filters have beco...[Details]
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The idea of using trees to develop new batteries for electric vehicles has been questioned by many scientists. But a Japanese papermaker is determined to try to develop the technology. According to...[Details]
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On September 9, the 2019 China Semiconductor Packaging and Testing Technology and Market Annual Conference was held in Wuxi. At the meeting, Ye Tianchun, leader of the overall group of the National S...[Details]
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According to news on December 18, Tesla’s long-awaited 3D bird’s-eye view parking assist system has finally arrived. This feature called “High-Precision Parking Assist” is not a bird’s-eye view in th...[Details]
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The article uses a program to control the stm32 chip to generate PWM square waves to make the motor drive the permanent magnet to rotate. The voltage signal induced on the stator winding passes thr...[Details]
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The selection using the three discrete circuits shown in the figure above is simple and cheap, but there is also a disadvantage. When the battery voltage slowly drops to the vicinity of the detecti...[Details]
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Three-way speakers
Three-way speakers are generally divided into speakers with more than three units, including tweeters, mid-range units and woofers. There is a crossover inside the box, whic...[Details]
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With the development of optoelectronic information, microelectronics, network communication, digital video, multimedia technology and sensor technology, security monitoring has moved from tradition...[Details]
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The insulation resistance tester is also called the high voltage insulation resistance tester. Guodian Xigao shares with you how to use the insulation resistance tester . When measuring the i...[Details]
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1. Modular Instruments – Flexible Customizable Software and Scalable Hardware
The increasing complexity of equipment and the gradual integration of technology have forced test systems to become mor...[Details]
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