单片机低频信号发生器

Low Frequency Waveform Generator Based on a Microcontroller

介绍利用单片机控制，采用频率锁相技术实现的低频信号发生器的软硬件结构及工作原理。该信号发生器能输出正弦波、方波、三角波、锯齿波四种波形，具有频率和幅值控制方便、准确、稳定度好的优点。

This arcticle introduces the design of the system and the principle of the low frequency waveform generator which is based on a microcontroller and is adopted the technique of phase locking. The generator can produce accurate sine, square, triangle and sawtooth waveforms. The frequency and the voltage amplitude can be adjusted convenientely with a good stability.