【摘要】 从正、负反馈对放大器性能影响出发,分析RC串、并联电路及其对偶电路的频率特性.根据正弦波振荡器的相位、幅度平衡条件,研究RC对偶电路在正弦波振荡电路中作为负反馈网络的可行性,提出了一种高稳定度信号源———对偶式RC桥式正弦波振荡器及实现电路,最后对这种新型信号源频率特性能进行了分析.更多还原

【Abstract】 The article analyzes the frequency characteristics of RC series parallel circuits and the symmetrical circuits, through studying the effectiveness of the positive-negative feedback to the amplifier. According to the phase-amplitude balance condition of sinusoidal oscillators, the practicability of frequency-selection network was discussed. When using RC-circuit as feedback,a new type of feedback oscillator and the realizing circuit were set up. Finally the article analyzes the performances of the new oscillator.更多还原