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The first circuit principle: The AC220V voltage is half-wave rectified by D3 and filtered by C1 to obtain a voltage of about +300V. One path is added to the switch tube Q2 c pole through the prim...[Details]
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Development board: tiny4412ADK+S700 4GB Flash Host: Wind7 64-bit Virtual machine: Vmware+Ubuntu12_04 u-boot:U-Boot 2010.12 Linux kernel version: linux-3.0.31 Android version: android-4.1.2 Above ...[Details]
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From the fourth to the seventh lesson, we have learned most of the basic grammar. The grammar of various basic statements to be learned in this lesson can be said to be the soul of the program. In th...[Details]
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In June 2022, the European Parliament approved a new directive requiring the next generation of portable devices to support USB Type-C charging connectors. Manufacturers have until the fall of 2024 t...[Details]
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The quickest and easiest way to improve the test efficiency of LED power supply is to choose the appropriate electronic load. If you are not familiar with the knowledge of electronic load, or if you ...[Details]
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Shen Changyu, Director of the State Intellectual Property Office (Photo by Xu Xiang)
On December 26, 2023, the State Council Information Office held a regular briefing on the State Council’s...[Details]
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* Purpose: Dynamic scanning of digital tubes *
* Function: Digital tube display *
* Clock frequency: Internal 1M *
* Compilation environment: ICC-AVR6.31 ...[Details]
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According to 91mobiles, Samsung launched the Galaxy A32 5G phone in January 2021. Now, 91mobiles has collaborated with Onleaks to show the renderings of the Galaxy A33 5G. According to lea...[Details]
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The second industrial revolution pushed people from the agricultural age to the electrical age. Today, as people continue to invent and create, many products have been automated, all of which are i...[Details]
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The PL series of narrow pulse current sources from Pursis Instruments can be used in VCSEL and other test scenarios that require narrow pulse excitation. PL series devices have two channels: ①. Const...[Details]
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1. Learn how to use the instrument in detail Carefully read the product manual of the instrument, and do not use the instrument without being familiar with it. Be familiar with the terminal wiring di...[Details]
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During Toff, the control switch K is turned off, and the current flowing through the primary coil of the transformer suddenly becomes 0. Since the current in the primary coil loop of the transformer c...[Details]
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Recently, four students from the Diocesan Boys' School in Hong Kong developed an ultra-small humanoid
robot
with a height of only 141 mm
, which once again broke the record of "the world's ...[Details]
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Reference News reported on July 13 that Japanese media reported that the International Semiconductor Equipment and Materials Organization (SEMI) released a forecast on July 9 that global sales of sem...[Details]
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The performance of the multi-mode RS encoding algorithm was analyzed by simulation, and the effectiveness of the algorithm in the L-DACS1 system was verified through FPGA implementation. The results ...[Details]