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This paper describes the application of security alarm system in Shanghai rail transit, gives the structural characteristics and implementation methods of the multi-level intelligent security alarm sy...[Details]
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The 4.19 update to the Tesla app adds a new "driving in the sun" feature that allows non-Tesla owners to become charging members and also displays more details about charging speed and capacity. The b...[Details]
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As the production of upstream semiconductor chips continues to increase, the downstream packaging and testing production lines are also fully loaded. In addition, the recent capacity expansion has be...[Details]
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In the digital age, driven by cloud computing, 5G, automotive electronics, AIoT, and smart terminals, advanced process chips and packaging are ushering in an explosion, which has extremely high requi...[Details]
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China Energy Storage Network:
Since July 16, the daily power generation in China has remained above 21 billion kWh. On July 22 and 23, the national power generation hit two new historical hig...[Details]
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1. Chip heating This is mainly for high-voltage driver chips with built-in power modulators. If the current consumed by the chip is 2mA, and a voltage of 300V is applied to the chip, the power c...[Details]
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To limit fuel consumption, some car manufacturers are using Start/Stop functions in their new generation models. These innovative new systems shut down the engine when the car comes to a stop and aut...[Details]
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Thyristor drive circuit
The application circuit of MOC3061 in hot line switch is shown in Figure 2, and the actual circuit in thyristor drive is shown in Figure 3. In the figure, R1 is the curre...[Details]
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Parts and castings are important blanks for various mechanical equipment and boiler pressure vessels.
1. Ultrasonic flaw detection of castings
Due to the coarse grains, poor sound permea...[Details]
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In many occasions where single-chip microcomputers are used for control, in order to improve the human-machine interface, liquid crystal displays are often used to display the working status of the c...[Details]
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Time Slave Behavior
In the gPTP network, the node that acts as a Time Slave has the following message processing flow:
If EthTSynHardwareTimestampSupport is set to TRUE, the TimeSla...[Details]
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Bannockburn, IL, USA — IPC—The Association Connecting Electronics Industries® has released the 2018 Electronics Assembly Quality Benchmarking Study. This quality benchmarking study based on global el...[Details]
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According to data from the Liaoning Provincial Department of Industry and Information Technology, in the first quarter of this year, the overall development of Liaoning's integrated circuit industry ...[Details]
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Main
circuit
: Tr: current transformer
Control
circuit: M: multiplier; VA: voltage error amplifier (K1); CA: current error amplifier (K2)
Working principle: VA output: VA=K1...[Details]
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pc：Centos5.4
Kernel: Linux 3.0.1
Development board: ok6410
Cross compiler: arm-linux-gcc 4.4.1
LCD Driver
How to write LCD driver?
1. Allocate an fb_info structure: fr...[Details]
DSP and ARM Processors
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