[size=4]51 STM32 reference study manuals, one-click free points download, take it for free! [/size] [size=4]Download address: [url=https://download.eeworld.com.cn/wenji/show/370]https://download.eewor
Typical 4G phones already contain four to eight antennas, and 5G phones will need even more.
The space available for antennas in 5G phones is actually shrinking as manufacturers add other new features
Below is the circuit diagram of the power supply part of the board.The function of the board is that the 300V DC motor rotates through PWM controlled by the microcontroller.The problem now is that aft