I recently started to work on my graduation project. I chose a 900MHz long-distance RF access control system. I have also found some information online. The main problem now is the implementation of t...
I made an ARM board, which imitates the principle of MINI2440, but removed some small experiments such as LED and buzzer. I downloaded MINI2440's SUPERVIVI using JTAG and wanted to check the serial po...
I have a strange problem and I don't know how to solve it. I recently want to improve the ID card reading problem of the company's POS vending machine. In fact, the program I have on hand can read the...
Haha, I am very happy to get this AVRM16 development board from Aofei Electronics. The development board is very small and delicate. I love it as soon as I get it. Because of the component problem, I ...
Large-capacity memory (such as DRAM) has limited access speed, which is generally much slower than the CPU clock speed; small-capacity memory (such as SRAM) can provide fast access speed. Therefore, m...
Microwave resistor/ceramic substrate Our company specializes in developing various types of microwave resistors, metallized ceramic circuit substrates, and microwave delay lines (matching lines). Th...
The circuit shown in the figure is a three-digit tachometer used to measure low frequency signals with a repetitive time interval of 0.235 to 15 seconds. The tachometer has a speed range of 4 to 255 r...[Details]
A biped robot joint constructed by pneumatic artificial muscles is introduced. The joint uses the flexible characteristics of pneumatic artificial muscles to effectively control the impact of the la...[Details]
This article introduces a miniature home electrocardiograph. The instrument has powerful functions: display monitoring, storage, playback, printing, record management, power alarm, telephone or Intern...[Details]
Obtaining real-time and reliable traffic information has always been a bottleneck problem in the development of intelligent transportation systems. The establishment of an intelligent transportatio...[Details]
This issue will briefly introduce the test related to spectrum - occupied bandwidth.
Definition: Occupied bandwidth refers to the bandwidth corresponding to 99% of the total transmitted power, cent...[Details]
Due to the needs of medical development, in many cases, general thermometers can no longer meet the requirements of fast and accurate temperature measurement, such as measuring human body temperature ...[Details]
summary
Theoretically explains how to set up a PFC boost regulator using a current sensing transformer with the UCC3817 control IC.
1. Schematic
The schematic diagram is show...[Details]
A well-designed electronic load is not designed just for use in the lab; it should be carefully designed and built to test actual power systems. This is true for military portable systems, such as ...[Details]
1. Introduction
The UCC28051 reference design is a 100W offline AC/DC voltage converter with power factor correction (PFC). This power module design is intended to illustrate how to proper...[Details]
With the advent of the new economic era represented by the Internet, PCs have lost their former glory, and smart 3C products (Computer, Communication and Consumer) will set off a new wave. As one o...[Details]
The discipline of HHCE (Home Health Care Engineering) is gradually entering people's lives as people pay more attention to health and telemedicine develops. It advocates the concept of "seeking m...[Details]
In the WTK22wtklibdevicesDefaultColorPhoneDefaultColorPhone.properties file in the WTK directory, there is a line touch_screen=false. Change it to true.
MIDP2.0 has three touch screen methods:...[Details]
0 Introduction
GaAs photocathode is a negative electron affinity photocathode with the advantages of high quantum efficiency, concentrated energy and angle distribution of emitted electrons. T...[Details]
With the continuous development of the national economy, the application of variable frequency speed regulation devices is becoming more and more extensive. How to break the monopoly of foreign produc...[Details]
1 Introduction
Many test systems require real-time data acquisition while continuously moving. If the test process is discontinuous, or the test position is in front and the acquisition is...[Details]