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When repairing a circuit, it is often necessary to remove the integrated circuit from the printed circuit board. Since the integrated circuit has many pins and they are densely packed, it is difficul...[Details]
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On February 4, it was learned from the Southwest Branch of State Grid Corporation of China that in the face of the epidemic, the branch strengthened its organizational leadership, and further refin...[Details]
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China Energy Storage Network News:
In 2015, with the issuance of the "No. 9 Document" for power reform, a new round of power market reform set sail again. After nearly seven years of practi...[Details]
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Our flight had just begun to descend when a gentleman sitting next to me turned to talk to me about engineering—he had seen me reading an engineering journal. The gentleman next to me said that he wa...[Details]
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VI Block Diagram
After you create the front panel, you can use the block diagram to add source code. The block diagram is a collection of graphical source code, also known as G-code or block di...[Details]
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1. Origin of the problem
1. Phenomenon
In net_send_packet() of the linux4.3.2 network card driver cs89x0.c, there is:
1 /* Test to see if the chip has allocated mem...[Details]
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【Introduction】There are many reasons for surges. Surges are spike pulses with a high rise rate and short duration. Overvoltage of power grid, sparking of switches, reverse power supply, static elec...[Details]
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According to Caixin, the financing negotiations of Japanese panel giant JDI have entered a critical moment, and TCL intends to invest and take a controlling stake. JDI has been losing money for man...[Details]
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The rapid pesticide residue detector (food detector, food safety detector) can be used to detect pesticide residues in vegetables and fruits. It is often used in farmers' markets, agricultural produ...[Details]
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The arrangement of the LEDs and the specifications of the LED light source determine the basic driver requirements. The main function of an LED driver is to limit the current flowing through the LE...[Details]
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The principle of LED light emission is different from traditional lighting . It relies on PN junction to emit light. LED light sources with the same power have different chips and different curr...[Details]
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1. Input characteristics
Voltage measurement range: 0~750V wide range.
Current measurement range: 0~100A, all internal automatic range switching.
2. Accuracy
Voltage: ±0.3%
Current, frequency: ±0...[Details]
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introduction
As batteries become more popular as a power source, an equally strong need has emerged to maximize the useful life of the batteries. Cell imbalance, or the mismatch in the sta...[Details]
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On February 8, TikTok Search reached a cooperation with Apple Siri, allowing iPhone users to directly search for TikTok video content through Siri voice commands. It is reported that this is t...[Details]
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With the development of technology, the operating frequency of computer CPU is getting higher and higher, and its information processing ability and various functions are getting stronger and stron...[Details]
PCB Design
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