NFC development historyNFC function is mainly used in mobile phones and has become popular in recent years, but its origin can be traced back to 2003. At that time, Philips and Sony planned to develop...
ESD devices are used to prevent static electricity from damaging chip pins. How do you know if an ESD device is still working properly after a period of use? Is there any way to detect whether an ESD ...
Use two computers to connect network cables respectively, and the other end of the network cable is connected to the SK202 evaluation kit. Then use two USB cables to provide 5V power to form the SK202...
(1) The error is as follows: ------------------------- tam2012112701.pjt - Debug ------------------------- [Linking...] "C:\CCStudio_v3.3\C2000\cgtools\bin\cl2000" -@"Debug.lkf"28335_RAM_lnk.cmd: erro...
[b][color=#5E7384]This content is originally created by EEWORLD forum user [size=3]tiankai001[/size]. If you need to reprint or use it for commercial purposes, you must obtain the author's consent and...
I'm restoring a circuit board, and I don't know what 20-pin H-bridge motor driver chips are available. I hope you can tell me the model number. I can find it, thank you in advance....
Connection of Brushless DC (BLDC) Motors
There is no established standard for wiring brushless DC (BLDC) motors and controllers, so the Hall sensor and phase leads may be labeled ABC, UVW, o...[Details]
Power Integrations (Nasdaq: POWI), a leading company in the field of high-efficiency power conversion with high-voltage integrated circuits, has announced a new switching power supply IC product - Li...[Details]
K4, K3: "In and Out" simulation detection keys. Each time K3 is pressed first and then K4, it represents one person "in"; each time K4 is pressed first and then K3, it represents one person "out". Ea...[Details]
The operation process of measuring transformers with a ratio bridge is cumbersome and the measurement range is narrow. It is no longer suitable for the fast-paced and high-frequency requirements of m...[Details]
The circuit is shown in the figure. This circuit can obtain a higher output power by simply changing some components. The circuit R1, L1, D1, C1 to C7 on the left side of the figure is a convention...[Details]
Because I want to make two 51 microcontrollers communicate, but I can't use the serial port, because the STC89C52 microcontroller has only one serial port, which is occupied and there is no serial po...[Details]
According to Jiwei.com, as the review of the Science and Technology Innovation Board is gradually accelerated, more and more companies in the technology field are rushing to the Science and Technolog...[Details]
Automatic light off circuit
Some lighting lamps do not need to be always on. The automatic light-off circuit shown in the figure brings convenience. When lighting is needed, just press switch K ...[Details]
August 26 news: Starting today, Apple Pay officially supports Xiamen e-Pass. Users can use Apple Pay's quick transportation mode to travel conveniently and take buses, subways and BRT in Xiamen. Wi...[Details]
According to foreign media reports, more and more companies are now seeking to promote autonomous driving and reduce traffic accidents to create a safer and more comfortable automobile society. To ac...[Details]
Today a colleague asked me to help make a countdown timer to control the on and off of a relay, but it had to be low power. It happened that I had made a street light controller with dual relays b...[Details]
Lianjian Optoelectronics' controlling shareholder, actual controller, second largest shareholder and Guangdong Southern New Vision Media Technology Co., Ltd. (hereinafter referred to as the "Proposed...[Details]
The differences between servo presses and ordinary presses are mainly reflected in the following aspects:
How it works
A servo press is a press driven by a servo motor. Its work...[Details]
RF/Wirelessly
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