This article uses 12 components to make a miniature wireless FM microphone with a stable operating frequency and a transmission distance of about 30 meters . It can reach more than 100 meters when pow
The serial port of this board is relatively crude, it is directly connected to 232, and the max3232 is used for conversion.The onboard serial port used is USART0, and from the schematic diagram, we ca
The figure is a constant voltage and constant current control circuit composed of LM358 amplifier and TL431 precision voltage regulator. The induced voltage of transformer winding N2 is rectified by V
[align=left][font=宋体]With the rapid development of the new energy vehicle industry, CAN bus problems are becoming increasingly prominent, and potential bus failures are extremely serious. So, how to e
One of the characteristics of wireless access technology that distinguishes it from wired access is that the standards are not unified, and different standards have different applications. Because of