When working with RF, we pay special attention to the Q value when selecting inductors and capacitors. So what is the Q value? What does the Q value mean and why is it important?
Quality factor Q: A q...
The easiest way to evaluate the timer function of a development board is to evaluate its breathing light function. The breathing light is realized by PWM wave, and PWM is generated by the timer. Open ...
ZigBee is a low-speed, short-distance wireless network protocol. Its underlying layer is the media access layer and physical layer that adopt the IEEE 802.15.4 standard. Its main features are low spee...
I saw two X capacitors on a power supply, one with two 1M resistors in series, and the other with VR selected. I would like to ask what the difference is...
The phenomenon encountered is that after powering on, ADN8834 works normally at first, and then after powering on again, it is found that the supply current increases and the voltage is pulled down. A...
The MSP430 Launchpad, is an easy-to-use Flash programmer tool with 14/20-pin and DIP socket target boards with integrated emulation capabilities.For more details, please refer to EE's previous activit...
Actually, I have wanted to write about I2C for a long time, but various things delayed me. I took advantage of the May Day holiday to write this for your reference. I will spend some time to study th...[Details]
I wrote a C program on Keil to figure out the implementation of interrupts. I took notes:
1. Five interrupt sources of 8051
serial number
Interrupt Sources
Entry address
...[Details]
Power cable power supply has been increasingly widely used due to its safety and reliability. However, high-voltage cables are laid underground for a long time and are affected by factors such as mois...[Details]
Abstract: Aiming at the shortcomings of low main frequency, slow speed and poor portability of current card readers, a design scheme of RFID card reader system based on S3C6410 is proposed. This pape...[Details]
On March 2, 2023, Chengdu Ruichengxin Micro Technology Co., Ltd. (referred to as: "Ruichengxin Micro" "Actt") announced that the company launched LogicFlash Pro® eFlash IP products based on the BCD p...[Details]
According to media reports on January 14, Mercedes-Benz Chief Technology Officer Marcus Schaefer evaluated the power batteries of new energy vehicles. Schaefer mentioned: Currently, the energy dens...[Details]
The battle between Waymo (the self-driving company under Google's parent company Alphabet) and Uber finally came to an end last week, and the two sides finally reached a settlement. Let's follow t...[Details]
Recently, the "Three-Year Action Plan to Accelerate the Development of 5G Industry in Henan Province (2020-2022)" (hereinafter referred to as the "Action Plan") was issued, clarifying the development...[Details]
1. nand flash burns uboot and starts nand flash uboot to initialize 6410 and enter the uboot command line interface
2. Enter JLinkGDBServer -device ARM11 in the terminal
...[Details]
The schematic diagram is as follows: The source code is as follows: #include reg52.h #include intrins.h #include"define.h" #include"delay.h" #include"LCD1602.h" #include"DS18B20.h" #include"HL_a...[Details]
The loading system is widely used in the fully automatic quantitative loading control of liquid chemical products such as methanol, refined oil, and liquefied gas. In the traditional loading system d...[Details]
The air conditioner is divided into two parts, indoor and outdoor. Its refrigeration principle is: the low-temperature liquid refrigerant in the evaporator absorbs the surrounding heat to cool t...[Details]
High frequency switching power supply operation (electronics) allows the use of small passive components, hard switching mode will lead to increased switching losses, in order to reduce high f...[Details]
Five working modes of STM8 ADC The ADC of STM8 is a 10-bit successive approximation analog-to-digital converter with up to 16 multifunctional input channels. It has 5 conversion modes and can gener...[Details]
The "call" instruction in the ABB robot programming instructions is a very important instruction, which allows the programmer to call another program or subroutine in the program.
Overvi...[Details]
Analogue and Mixed Signal
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