Why is a large capacitor connected in parallel with a small capacitor?
At high frequencies of the same frequency, the impedance of a large capacitor is smaller than that of a small capacitor, and it h...
[i=s]This post was last edited by w494143467 on 2021-1-31 11:58[/i]1. Introduction
I have studied FreeRTOS for a while, and basically used the official examples. Some time ago, I saw a brother on the ...
When writing MQTT, stm32 subscribes to multiple topics. I don't know how to judge the topic. How to judge? Which topic to judge? I can't debug the program after writing it. Please help....
CV measurementCapacitance-voltage (CV) and AC impedance measurements are commonly performed on many types of devices for a wide variety of applications. For example, CV measurements are used to determ...
0 Introduction
The controller is the main body of intelligent robots to process and control information, which directly determines the behavior and performance of the robot. In recent year...[Details]
__swi void ledtest(); //: declare edtest to be a soft interrupt. __asm Inline assembly //: Usually you need to embed assembly code in a C program. In this case, you can use the __asm keyword to i...[Details]
Translated from EEtimes It is said that 2020 will be the era of 5G explosion, but now it seems that it is no longer the case. Mobile industry analysts are scrambling to revise their predictions for...[Details]
Abstract: This design uses AVR microcontroller as microcontroller, combined with pressure sensor, AD7705, LCD1602 to realize a high-precision multifunctional digital electronic scale. The article i...[Details]
introduction
With the improvement of people's living standards, card payment has become one of the commonly used payment methods. In order to ensure the security of card payment, PSAM cards are em...[Details]
When developing a single-chip microcomputer project, keyboards are often needed, and most of the time, keyboards use single-button or matrix keyboards. Matrix keyboards have many advantages, and I ...[Details]
In the process of miniaturization of chromatographic instruments , the reduction of size must not only consider the properties of the materials and the possibility of manufacturing, but also consid...[Details]
1 Introduction
Information acquisition mainly includes the acquisition, storage, processing and control of signals and data. It first collects and records the physical analog quantities of the...[Details]
Differential pressure flowmeters are widely used in the industrial field, accounting for more than 70% of the total number of flowmeters used in the entire industrial world. With the rapid developmen...[Details]
What I have done is GPS + MCU + LCD display. The crystal oscillator on the board is 11.5902Mhz. The hardware connection is to use the NEMA port of Garmin25 to convert the TTL level via RS232 to the 10...[Details]
Many MCUs produced now have expanded the 8051 core, such as internal watchdog, ADC conversion, EEPROM, PWM and other functions. When programming control programs, if you need to use these expansion mo...[Details]
I recently upgraded 51_IAP and ARM_IAP, and I feel their similarities and differences, which are recorded as follows:
Common points:
The key to a good IAP is the interrupt vector mapping (REMAP...[Details]
Abstract: According to the characteristics of high-speed fixed-point DSP chip TMS320F206, it is proposed to use serial A/D converter TLC2558 as the analog input part of DSP system, which solv...[Details]
To celebrate the 40th anniversary of the development of airbag control systems, Continental will showcase a range of new in-vehicle safety systems at the IAA Mobility 2021 in Munich, including pre-cr...[Details]
This article introduces the main features of NCP1308, internal circuit architecture, typical application circuit diagram, and 50W quad-output set-top box (STB) power supply circuit diagram and bill...[Details]
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