[i=s] This post was last edited by jameswangsynnex on 2015-3-3 20:00 [/i] If I use a DC power supply to charge a mobile phone battery, what voltage should I use and how long should it take to charge? ...
I didn’t go into it in depth for a while, I just watched the routine and used it twice!I had nothing to do at home on the weekend, so I took a good look at the MSP430 clock system! It feels very flexi...
For many years, the demon beast HMI has been causing chaos in the human world, confusing people's vision and hearing!Almost no one knows when it entered the human world?According to various secret boo...
I used STM32F107+DP89848+OCM2521 to build a fiber optic Ethernet. OCM2521 is a 100M multimode fiber optic module with a voltage level of 3.3v (LVPECL), but it didn't work. The loopback test was succes...
This is my first time making an STM32 board, model F103ZET6. After the PCB arrived, I soldered the STM32 to the board. Because the DCDC chip had not arrived yet, I brought out the SWD interface, used ...
Transistor amplifier circuit: The input voltage range is wide, and the parameters of each component are based on actual experimental tests and have been adjusted to a suitable static operating point. ...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
With the promotion of the construction of intelligent communities in the country, anti-theft systems have become essential equipment for intelligent communities. Especially in recent years, the urg...[Details]
In early 2002, I started to write a working program for an IC card prepaid electricity meter. The meter used Philips' 8-bit 51-expanded single-chip microcomputer
87LPC764
, and wa...[Details]
introduction
With the continuous optimization of surface mount technology (SMT) and the rapid development of chip component manufacturing technology, the application of chip mounters in the el...[Details]
As a wireless broadband metropolitan area network standard, WiMAX technology has greater advantages than previous 3.5GHz MMDS products in terms of non-line-of-sight transmission and spectrum utiliz...[Details]
1. Introduction
Automobile pollution is one of the most important issues that people are most concerned about and need to solve urgently. As an important method for detecting automobile exhau...[Details]
1. Principle of displacement angle sensor
The angle sensor is used to detect angles. It has a hole in its body that fits the LEGO axle. When connected to the RCX, the angle sensor counts once ...[Details]
introduction
The emergence of high-performance, low-power embedded CPUs and high-reliability network operating systems has made it possible to implement applications with large amounts of comp...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
1 Introduction
Water resources are the basic conditions for human survival and the lifeline of economic development. The reality shows that due to the global shortage of water resources and th...[Details]
As a simple and practical input device, buttons have been used in various microcontroller application systems and are ubiquitous. However, the buttons used in different practical occasions are also...[Details]
introduction
MEMS is a high-tech that has flourished on the basis of integrated circuit production technology and dedicated micro-electromechanical processing methods. Pressure sensors develop...[Details]
We know that the inverter consists of two parts: the main circuit and the control circuit. Due to the nonlinearity of the main circuit (switching action), the inverter itself is a source of harmoni...[Details]
Corelink Semiconductor has launched the CL1100-based 5-7W E27 LED lighting driver system solution DB2. This driver module meets the requirements of small size (L×W×H=5.1cm×2.1cm×1.8cm), low standby...[Details]
introduction
At present, measuring instruments are developing towards networking, and each individual embedded instrument will become a node on the Internet. This system realizes the network...[Details]