Digital PLL frequency synthesizer is applied to produce driving signals, and the frequency-hopping circuit is designed to improve switch speed between different frequency of driving signals. 采用数字锁相环频率合成器产生射频驱动信号;设计了跳频电路部分以提高不同频率驱动信号间的切换速度;
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。
Under the principle of the low power consumption design, the simulated signal which is output from blast sensor is disposed and transformed into digital signal by disposal signal circuit and A/ D switch. Then the digital signal is stored in the memorizer. 在微功耗设计原则下,该电路从传感器输出的冲击波信号经过预处理以及A/D转换后存储到存储器中,并可通过USB口上传到计算机。
The technique of full-bridge soft switch is completed by the aptitude DSP system, sampling differential signal transmission, adopting fuzzy adaptive PID control arithmetic, producing digital PWM work with drive circuit to control full-bridge switch. 全桥软开关移相控制技术由智能DSP系统完成,采样信号采用差分传输,控制算法采用模糊自适应PID算法,产生数字PWM波配合驱动电路控制全桥开关的通断。