The battery is DC3.0V after LDO, and a 0805 10Uf capacitor is output. Why does it slowly rise from 0V to 3V when tested with an oscilloscope? What's the reason? Is it because the probe capacitance is ...
With the rapid development of communication technology, the communication industry is about to enter the 5G era. Data transmission will be more intensive, and the amount of data exchange will become l...
After several days of repeated tests, the ADC experiment based on the STM32F030Disco core board was finally basically successful. Why do I say basically successful? Because I opened four channels (1~4...
[i=s]This post was last edited by zhyouer on 2019-2-12 21:28[/i] New Year's Eve Competition + New Year's Eve Dinner, Visit Lanterns, Live a Wonderful Life! I wish you all a smooth work in 2019! Have a...
When measuring the on/off status of the diode, I went to measure whether the ATX power supply 13009 was short-circuited, but I forgot to dial the 220V power supply, and the multimeter exploded directl...
The domestic power supply industry has generally adopted automatic measurement systems for product testing. The entire system will include a variety of measurement items, and most tests can be measur...[Details]
These circuits are often used in systems that need to remain fully functional throughout their operating life, such as servers, network switches, redundant array of independent disks (RAID) storage...[Details]
PDF-3000 DC system ground fault tester is also called DC ground fault tester, DC ground fault detector, DC ground fault detection device and DC ground fault finder. PDF-3000 DC system ground fault te...[Details]
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LCD1602.H
The user function is C51.
Copyright (c) 1988-2004 Keil Elektronik GmbH sum zhaojun
All rights reserved.
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Align the flat electrode arm on the X-type welding clamp
After aligning the fixed electrode arm, care must be taken to recalculate the TCP point.
Before aligning, please observe the repor...[Details]
In the process of learning single-chip microcomputer, I often have such troubles: any random chip will occupy three or five IO ports, and generally 8. If I want to use more chips, I always feel that t...[Details]
In the computer industry, lithium-ion
batteries
are both loved and feared. The accidents that occurred in the early days of lithium-ion
battery
applications are still fresh in the m...[Details]
my country's telecommunications standardization work began to formulate standards as early as the early 1950s. At that time, the Ministry of Posts and Telecommunications issued documents to make cl...[Details]
The matrix keyboards I have seen generally have two identification methods: scanning method and line inversion method. Taking a 4X4 matrix keyboard as an example, the scanning method is to set each r...[Details]
LED display is a high-tech engineering product that integrates electronics, electricity, computers, communications, information, image processing, optics, materials, structures and other multidisci...[Details]
The programmer communicates with the PC host computer through the USB interface. Users only need to perform simple operations on the PC host computer GUI to erase, program, verify and encrypt STC 8...[Details]
1 Introduction With the development of the economy, the number of cars has increased, and the pressure on urban roads has increased. On densely populated roads, people and vehicles often compete for ...[Details]
Despite the heavy pressure from the United States, Huawei is still moving forward steadily. In the recently released "2019 China Top 500 Private Enterprises Report", Huawei Investment Holding Co., Lt...[Details]
1. UPS Types
Common UPS are generally divided into three types: online, backup, and online interactive.
When the online UPS is working, it first steps down the input mains voltage, re...[Details]
According to the website of the Ministry of Commerce, in response to the U.S. Department of Commerce's recent inclusion of 23 Chinese entities in the export control "Entity List", the Ministry of Com...[Details]
PCB Design
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