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With the acceleration of economic development, the application of 10/0.4 kV distribution transformers is becoming more and more extensive. Their protection is generally equipped with quick-break pr...[Details]
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In recent days, at the exhibition area of the 5th China International Import Expo (hereinafter referred to as CIIE), many innovative products with a strong sense of the future in the fields of in...[Details]
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In daily life and work, we have to check some small components, such as the quality of judgment. But do you know how to measure whether the capacitance is normal? Today I will teach you several ways ...[Details]
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With the rapid development of modern avionics technology and the improvement of aircraft performance, the parameters displayed by the airborne graphic display system are increasing, and at the same t...[Details]
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IT Home reported on July 12 that a netizen had previously exposed the front design of the Huawei Mate 30 series, saying that the front uses a curved screen design with a "small bangs" shape, no...[Details]
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According to the U.S. Energy Information Administration, the average retail price of energy in the U.S. in 2014 was 10.44 cents per kilowatt-hour, and transmission and distribution losses are estimat...[Details]
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The luminous efficiency of LED has reached and is exceeding the level of traditional light sources such as fluorescent lamps and HID lamps, and will gradually become the mainstream light source in th...[Details]
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We all know one thing from childhood: Anyone who says he can teach you to get rich overnight is a liar. Because if there really is such a secret to turning stone into gold, why don't these people use...[Details]
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The China Enterprise Confederation and the China Entrepreneur Association released the list of China's top 500 enterprises in 2019. According to the list, the top 500 Chinese enterprises in 2019 have...[Details]
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High-power switching power supply composed of L4970A As shown in the figure, this is a high-power switching power supply composed of L4970A. L4970A is a high-power monolithic switching integrat...[Details]
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SLAM is the first problem encountered when entering an unknown environment, whether indoors, outdoors, in the air or underwater. This issue will introduce the basics of SLAM: and the visual SLAM fr...[Details]
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LIN mater's 51 MCU code /**************master*****************/ #include REGX52.H #include intrins.h sbit p31=P3^1; sbit k1=P1^0; sbit k2=P1^1; sbit p20=P2^0; unsigned char t; unsigned char se...[Details]
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On May 9, market sources said that Toyota's joint venture in China plans to abandon its own hybrid model (oil-electric hybrid system) in the next 2-3 years and instead introduce BYD's DMI technolog...[Details]
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The reporter learned from State Grid yesterday (December 20) that in 2020, State Grid will accelerate the construction of power grids in deeply impoverished areas.
Data released by the State G...[Details]
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The self-discharge of electric vehicle batteries refers to the gradual loss of charge inside the battery when it is not in use, thereby reducing the battery's available energy. This is an important...[Details]