kd9300各引脚都代表什么
2025.06.04 03:19 4 0
KD9300是一个常见的继电器模块，通常用于电路中的开关控制，它由一个微控制器驱动，用于控制继电器的开关状态,以下是其常见引脚及其代表的含义：
- VCC（电源正极）：连接到5V或3.3V电源,为继电器模块供电。
- GND（地）：连接到电路的地线,确保电路的稳定性和安全性。
- IN（输入）：这是连接到微控制器的引脚，当输入高电平时，继电器被激活；当输入低电平时,继电器断开。
- NC（空接点）：这是一个未使用的引脚,通常不连接到任何电路。
- COM（公共端）：这是继电器的一个端子，当继电器被激活时,它会连接到另一个端子。
- NO（常开接点）：当继电器被激活时,这个端子会与COM端子连接。
- NC（常闭接点）：当继电器被激活时,这个端子会断开与COM端子的连接。
以下是KD9300的引脚图示例：
VCC ---- [IN] ---- GND
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