整点报时信号取样电路蒋敏为了弥补数字电子钟存在大小不等的误差，本文介绍一个利用广播电台报时信号自动校正计时误差的电路。附图为整点报时信号取样电路的电原理图。广播电台的报时信号通过磁棒线圈、调谐电路加到集成电路ＩＣＩ（ＬＭ３８）进行放大，然后驱动锁相环... The whole point of time signal sampling circuit Jiang Min In order to make up for the digital electronic clock size error, this article introduces a broadcast time signal automatically correct the timing error of the circuit. Figure for the whole time signal timing signal sampling circuit schematic. Broadcasting station timing signal through the magnet coil, the tuning circuit added to the integrated circuit ICI (LM38) to amplify, and then drive the phase-locked loop ...