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PV DC fuses are safety devices used to protect PV panels, inverters, and DC loads. To ensure their safety and reliability, they must be UL248 certified.
Before applying for UL248 certifi...[Details]
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1. Equipment Overview
Shell-and-tube heat exchangers are a common heat exchange device used in chemical evaporation and heating equipment. Currently, the tubesheets of shell-and-tube heat exch...[Details]
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Wave soldering is a crucial electronic component soldering technique used in the production of a wide range of electronic devices, from home appliances to computers to avionics. The process is wide...[Details]
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Some time ago, I attended the 4th Energy Chemistry Forum of the Chinese Chemical Society and learned about high-energy-density and high-safety batteries. I would like to summarize and share this wi...[Details]
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Electric vehicles are currently gaining momentum, but this is just a facade. Fuel-powered vehicles remain unchallenged. While electric vehicles boast unique advantages in environmental emissions an...[Details]
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As the main model among new energy vehicles, pure electric vehicles have received strong support and encouragement from the country in recent years, and their development is changing with each pass...[Details]
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In recent years, the government has increasingly supported electric vehicles, and the number of electric vehicles has increased. Observant drivers will notice that there are many more green license...[Details]
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Multi-touch mobile phone
Multi-touch is a system that can respond to multiple touches on the screen at the same time. Multi-touch phones are divided into capacitive and resistive types. Capaci...[Details]
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With the rapid advancement of automation technology, collaboration between robots is no longer just science fiction. Imagine dozens of machines moving goods in a warehouse without interfering with ...[Details]
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For autonomous vehicles to safely navigate the road, they must identify far more complex objects than just traffic lights, pedestrians, and other familiar objects. Among these obstacles is a crucia...[Details]
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Since its invention in the mid-1940s, the microwave oven has evolved from a humble beginning to commercial use, entering homes in the 1960s and rapidly gaining popularity. Its basic functionality a...[Details]
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Have you ever heard stories about "crazy appliances"? Think of microwaves that turn on automatically or ovens that preheat without any human input? With radios and electromagnetic interfaces ubiqui...[Details]
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In daily life, power transformers have different functions and uses due to different usage scenarios. The most common ones can be divided into: control transformers, isolation transformers, rectifi...[Details]
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1. Fault phenomenon and cause analysis
1. During the operation of the equipment, the expansion sleeve is subjected to a large torque, and the mating surfaces of the shaft and the sleeve move...[Details]
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In the field of communications power supplies, AC/DC rectifier power supplies are called primary power supplies or basic power supplies, while DC/DC converters are called secondary power supplies. ...[Details]