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1. Principle and classification of supercapacitors Supercapacitors are mainly composed of positive and negative electrodes, electrolyte solution, separator and current collector. The separ...[Details]

Electromagnetic flowmeters have many advantages, but if they are improperly selected, installed, and used, it will lead to increased errors, unstable indications, and even damage to the meter body. ...[Details]

According to previous rumors, Samsung is very likely to officially release a special edition model called Galaxy S21 FE during the CES 2022 exhibition. This is a cost-effective flagship with a focus ...[Details]

　　　Master Gao is an old engineer who has been in the auto repair industry for more than 30 years. Every time relatives and friends around him buy a second-hand car or change a car, they ask him for h...[Details]

Nowadays, the world is short of energy. How to protect resources and reduce energy consumption has become a top priority for scientific research and industry, especially in the fields of metall...[Details]

1. Why use non-contact infrared thermometer? 　　         Non-contact infrared thermometers use infrared technology to quickly and easily measure the surface temperature of an object.         No mecha...[Details]

Now people know that LED is widely used in various fields, and many LED lamps can be seen in many occasions . LED lamps generally have good light transmittance, and the softness of the light emit...[Details]

　　What is an Impedance Analyzer? 　　Impedance analyzers can perform accurate measurements over an impedance range and a wide frequency range. They utilize the different conductive properties of object...[Details]

As detailed in a regulatory filing in February, Apple's senior vice president of retail, Angela Ahrendts, will leave the company today, with April 15th, local time in the United States, being her las...[Details]

Physical picture of digital tube: No matter how many digital tubes are connected together, the display principle of the digital tube is the same, which is to light up the internal light-emitting di...[Details]

1. The inverter external switch controls the forward and reverse circuits 2. Power on the inverter (press button SB2 to form a self-locking circuit) 3. Forward control (switch...[Details]

Electricity from sunlight is a truly "green" and cheap energy source, but requires an energy conversion system based on photovoltaic (PV) cells and storage devices (such as batteries). PV or solar cel...[Details]

With the rapid development of embedded systems, embedded PCs are widely used in many fields. Among them, embedded keyboards, as a human-computer interaction tool, play a very important role. The usua...[Details]

LED street light Light distribution is to project light to every area of ​​the road as much as possible to obtain light distribution that meets the requirements of road lighting. Whether...[Details]

The multimedia speakers on the market now generally have thin cabinet materials, poor speaker unit quality, unreasonable crossover point settings, insufficient amplifier circuit components, poor perfo...[Details]