Introduction was made to the composition and working principle of a power-off time delay relay which adopts CMOS digital circuit, digital dial disc for switch setting and without auxiliary power.
介绍了一种采用CMOS数字电路、数字拨盘开关整定、无辅助电源的断电延时继电器的组成及工作原理。
Switch frequency can finish through the easy operation, the setting still can be kept after power shot down.
开关频率可以通过简单的操作来完成，在关闭电源后仍然保持设置。
Switch frequency can finish through the easy operation, the setting still can be kept after power shot down.
开关频率可以通过简单的操作来完成，在关闭电源后仍然保持设置。
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