时间继电器可分为通电延时型和断电延时型两种类型。
Time relay can be divided into electricity delay type and power outages delay type two kinds.
电路设计具有断电延时功能，确保制冷压缩机电机启动时不受损害。
The circuit is designed to have power-off-delay function to ensure no any damage happens when the motor for refrigeration compressor is started.
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。
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.
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