Activated carbon can absorb formaldehyde. Will the adsorbed formaldehyde be released? How is the activated carbon treated after adsorbing formaldehyde?I have previously worked on tests related to hous...
I have been playing with ARM microcontrollers for several years, and I am basically stuck in the STM32 circle. Although I have chips from other manufacturers in my stockpile, I have hardly used them, ...
Based on the birth of Mr. Zhou Gang's waterproof insulated socket. The FC insulated electrical connection technology it implements is also amazing. However, the principle of its implementation is not ...
Development of STM32 online burning programSTM32 solidifies a boot program during the chip production stage, which is used to download the program to FLASH through the USART1 interface. This brings gr...
National VI OBD emission terminal H6S remote online monitoring production test tool precautions
◆ The baud rate of the serial port is 115200;◆ This tool only supports the testing of H6x series product...
On April 22, Lam Research, a well-known semiconductor equipment manufacturer, announced its third-quarter financial report for fiscal year 2020 (ending March 29). The company reported adjusted earn...[Details]
Four circuits of monostable trigger composed of 555:
The circuit shown in Figure (a) is a typical monostable mode circuit. When an external pulse is applied to pin 2 of 555 through the C1 and ...[Details]
Three-phase motor is a commonly used electric motor. It is widely used in various fields due to its advantages such as high efficiency, low noise and smooth operation. The following will introduce ...[Details]
Resonators and oscillators are often confused. After some time of comparison, I have sorted them out. We are used to calling them crystal oscillators, but this term is actually very vague. Here, th...[Details]
1 Introduction
Solar street lights are mainly composed of four parts: solar photovoltaic cell components, batteries, charge and discharge controllers, and lighting fixtures. The bottleneck for the ...[Details]
As LEDs continue to improve in almost every aspect of performance and cost, LED lighting is being used in an increasingly wide range of applications, among which LED street lights are a focus of in...[Details]
A complete circuit board contains a large number of electronic components. Due to many uncertain factors, it is very common for components to be damaged. When equipment fails, it is mostly due to t...[Details]
The analog type consists of a meter head, a measuring circuit and a conversion switch, as shown in Figure 1: Figure 1 Appearance of a multimeter ① Meter ② Switch The schematic diagram of the magnet...[Details]
XTAL1 and XTAL2 are the input and output of the inverting amplifier used as the on-chip oscillator, as shown in Figure 12. This oscillator can be used with either a quartz crystal or a ceramic resona...[Details]
2-1-1-18. Distributed capacitance of switching power supply transformer
The distributed capacitance of the primary and secondary coils of the switching transformer also has an important im...[Details]
With the rapid development of the domestic lithium battery industry, the market demand for lithium battery related materials has been greatly boosted. In particular, the use of PVDF resin for lithium...[Details]
Driven by the Android mobile phone camp, TOF, which was once "hotly hyped" by the market, seems to be facing an embarrassing situation. According to Korean news, Samsung is planning to redesign the s...[Details]
On June 2, Huawei HarmonyOS 2 was officially released. More than two months have passed. Have you upgraded your phone? Today, the official WeChat account of HarmonyOS released the upgrade pro...[Details]
1. The temperature only displays the integer part, which is much simpler.
2. The week was not adjustable before. The problem was that the value was not converted into decimal after reading DS1302.
3...[Details]
1. Experimental task
Use the table method to make port P1 change a single light: move left 2 times, move right 2 times, and flash 2 times (delay time 0.2 seconds).
2. Circuit diagram
...[Details]
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