在等待型转镜相机同步控制系统中需要多路相对于一个基准脉冲的可变延迟脉冲。过去常采用幻象电路及单稳电路的方法获得。这些电路有着下述共同的缺点: 1.延迟时间的稳定性差,随电源电压、温度等因素的变化而变化。 2.在延迟时间较长时,延迟可调的时间单位不易做得较小。 In the waiting type rotary mirror camera synchronization control system requires multiple relative to a reference pulse variable delay pulse. In the past, the method of using phantom circuits and monostable circuits was used. These circuits have the following common shortcomings: 1. The poor stability of the delay time, with the power supply voltage, temperature and other factors change. 2. When the delay time is longer, the time unit with adjustable delay is not easy to do.