Design an amplifier using discrete components, powered by a single power supply. Specifications: Voltage gain>=40db Input resistance>=10k Output resistance<=500 —30db Bandwidth: 20HZ—20kHz Output rang...
I polled several USB fd's POLLOUT events, and the event was generated without intervals, resulting in an infinite loop with no blocking point, and the CPU usage soared. When exactly does the POLLOUT e...
Hey guys, I'm a little confused about the SWD protocol, as follows: The protocol states that the debugger sends a read AP request packet, and the target chip gives an OK response and then immediately ...
The frequency converter is a device that converts the industrial frequency power supply (50Hz or 60Hz) into AC power supply of various frequencies to realize the variable speed operation of the motor....
I have a BGA rework station. Its temperature control is pointer-based. The temperature is not very accurate. Now I want to change it to digital temperature control. The adjustable method is different....
Event: The company simultaneously released its 2017 annual report and the first quarter report of 2018. In 2017, the company achieved revenue of 8.886 billion yuan, a year-on-year increase of 48.01...[Details]
Guangdong Traffic Regulation No. 355
To all municipal transportation bureaus (commissions) above the prefecture level, provincial transportation groups, Guangdong Power Grid Compa...[Details]
Recently, the Provincial Development and Reform Commission and the Provincial Poverty Alleviation Office jointly organized the application for a number of centralized photovoltaic poverty alleviation ...[Details]
1. Determination of STM32 ADC sampling frequency 1. First, read some information to determine the ADC clock: (1) The ADCCLK clock provided by the clock controller is synchronized with the PCLK2 (A...[Details]
According to MEMS Consulting, Japan's
Toshiba
will further develop its automotive
LiDAR
(laser radar) semiconductor business, mainly focusing on: (1)
light receiving elements use...[Details]
I am going to do a project recently, which requires counting the frequency and duty cycle of the external PWM signal. The chip used is STM32F207 Looking at the datasheet, I found that one of the ma...[Details]
The watchdog timer is used to prevent the program from running away due to strong interference noise caused by power supply, space electromagnetic interference or other reasons. Many microcontrollers...[Details]
On May 16, in response to
the public opinion storm caused by
Lenovo's
"
5G
voting" incident,
Lenovo
Holdings Chairman and
Lenovo
Group Founder Liu Chuanzhi, Lenovo Gr...[Details]
Making a digital sampling oscilloscope has been my long-standing wish, but after all, this goal is quite difficult, and there are too many aspects involved, such as analog front-end circuit, high-spe...[Details]
Use common anode digital tube and independent keyboard to connect P1 and P2 ports of single chip to realize answering machine The procedure is as follows: #include reg52.h void delay(unsigned char n)...[Details]
Assume that both the augend NA and the addend NB are three-byte compressed BCD codes, which are stored in the internal RAM units 20H~22H and 30H~32H, respectively, with the low digit first and the hi...[Details]
Unfortunately, my serial port has some problems and I can't print information. I can only debug to view variables and see the values. Fortunately, there is not much AD conversion code, and I can use ...[Details]
China Energy Storage Network News:
New era, new mission, new journey, the clarion call of the 19th National Congress report is loud and inspiring. Against this background, State Grid Corporat...[Details]
Bitcoin
It has been a roller coaster ride, with regulatory winds tightening. Some retail investors and small miners have left, while large miners have returned and some have moved overseas. L...[Details]
Embedded System
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