Based on DDS technique, the signal generator can create two signals, i. e. the sinewave and the square wave signals, and its amplitude, frequency and phase can be continuously adjusted.
采用直接数字合成（DDS）技术构建双路正弦波及同步方波发生器，实现幅值、频率、相位等连续调节；
The method which is presented can be also used for design of square wave generator.
这种方法利用最新型的编码反馈电路技术（并非正反馈技术），进行各种阶梯波发生器的设计。
A simple and high - Performance brushless DC generator consisting of a controlled rectifying circuit and permanent magnet square wave motor is Presented.
提出了一种可控整流电路，它与永磁方波电机联合构成一种简单、高性能的无刷直流发电机。
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