Bought a wifi module and it just arrived this week.
Since I have to go back to my hometown for New Year's Day, I don't have time to adjust. I have to take a week off this week. Sorry.
The wifi functio...
The adjustable power supply composed of LM317 has the following two problems:
1. What is the function of the circuit composed of VQ1 and R3 in the figure?
2. What is the function of VD2 in the picture...
1. DIP switch
This is a cross section of a plain old DIP switch. There are four groups of switches in this component. This is one of the switches.
This is the annotated version. It looks very simple. ...
After a circuit board is soldered, when checking whether the circuit board can work normally, it is usually not powered on directly. Instead, follow the steps below to ensure that there are no problem...
Application scenario: The switch uses MOS 47N60 or IPW60R045CP, and it is best if both can be driven. The driver supply voltage is 12-15V. [/backcolor][/color] [color=rgb(85, 85, 85)][backcolor=rgb(25...
ATmega48 has four XCKn (SCK) phase and polarity combinations related to serial data, which are determined by UCPHAn and UCPOLn. See Figure 77 for the timing diagram of data transmission. The shifting...[Details]
In recent years, the production and sales of pure electric vehicles in my country have grown simultaneously, reaching 2.942 million and 2.916 million respectively in 2021, an increase of about 1.7 ti...[Details]
Insufficient engine power is a common fault in automobile maintenance. The cause of this fault may be ignition system failure, fuel injection system failure, intake failure or mechanical failure. It ...[Details]
Current LCD modules include character type, graphic dot matrix type and simple digital code pattern. If three kinds of content are displayed on the same screen, only dot matrix type can be used,...[Details]
Scientists at Peter the Great St.Petersburg Polytechnic University (SPbPU) are developing a technique to print electrodes for tiny lithium-ion batteries using an inkjet printer . The ongoing research...[Details]
Self-driven synchronous rectification
Here are three types of synchronous rectification circuits : flyback, forward and push-pull . When working near the normal input voltage value, the effect is...[Details]
In recent years, an emerging power factor correction (PFC) technology, interleaved PFC, has been increasingly used in applications with strict form factor requirements, such as slim LCD TVs or laptop...[Details]
In actual engineering applications, when there are many keys, matrix keyboards or encoding keyboards are mostly used. For cost considerations, matrix keyboards are generally used.
The fol...[Details]
On July 8, the technical cooperation between Nezha Auto and Infineon Technologies and the global launch ceremony of Infineon's BMS overall solution were held at Nezha Auto's Tongxiang All-Ecologic...[Details]
RFID technology is maturing rapidly, and many countries are actively promoting it as an important industry. At present, China's passive UHF development is still in its early stages, and it is urg...[Details]
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STC MCU IO pin damage dynamic self-test program
HotPower@126.com 2005.6.6 at Dayanta Village Team Headquarters in Xi'an
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Site map of the flywheel energy storage project at Changfeng Wind Farm of State Power Investment Corporation Recently, the 5MW/175kWh flywheel energy storage project of Henan Electric Power Co., Ltd. ...[Details]
According to Reuters, the newly formed Italian government said on Thursday local time that it would allow the government to use "golden power" in the process of domestic operators using Huawei and ZT...[Details]
The ultrasonic sensor technology used in the reversing obstacle detection system can detect nearby obstacles and provide the driver with reversing warning and assisted parking functions. The princ...[Details]
Figure 1 Three-phase half-wave/single-phase load AC/AC conversion circuit
Figure 2 Voltage waveform with resistive load
Taking the three-phase to single-phase direct frequency conversion ...[Details]
stm32/stm8
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