In the EMC design of RS-485 ports, we need to focus on three factors: electrostatic discharge (ESD), electrical fast transients (EFT) and surge. The International Electrotechnical Commission (IEC) spe
Dear experts, I want to try to make Launchpad and msp430f149 communicate with each other, but Launchpad can receive data sent by msp430f149, but msp430f149 cannot receive data sent by Launchpad. I hav
As shown in Figure 1, the input signal VIN is given by the DSP chip. In Figure 1, R3 and C1 as well as R2 and C3 form a two-order low-pass filter. What is the principle of this filtering? It is easy t
[p=26, null, left][color=#333333][font=Arial]Wince has 3 audio modes: MDD/PDD, WaveDev2 and UAM. [/font][/color][/p][p=26, null, left][color=#333333][font=Arial]1. MDD/PDD: A model commonly used by Wi
[font=宋体][size=12pt]1. USB transplantation After transplanting the kernel and file system, carry out USB transplantation. S3C2440 integrates USB controller to support USB1.1 version, and supports USB
I would like to ask the experts~! I have been studying the charging principle of mobile phones recently, and there is a problem that I cannot solve. Why can I use the phone while charging it with a wi