(The single-chip microcomputer is a weak current device. Under normal circumstances, most of them work at 5V or even lower. The driving current is below the mA level. It is obviously not possible to use it in some high-efficiency occasions, such as controlling motors. Therefore, it is necessary to have A link to connect, this link is the so-called "efficiency drive".)
发表于 2022-7-31 11:51:19
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