在讲述晶体管文氏桥振荡器时,往往对晶体管的非线性作用只作定性的分析。本文的目的在于对文氏桥振荡器作一些定量的分析,以便对晶体管在RC振荡器中的非线性作用理解得更清楚。图1表示一个晶体管文氏桥振荡器实施电路。这个电路产生一个角频率为ω_o的正弦波振荡波形,测得的各点波形如图2所示。 When it comes to the transistor Wien-bridge oscillator, the transistor’s nonlinear effects are often only qualitatively analyzed. The purpose of this article is to provide some quantitative analysis of the Wien-bridge oscillator in order to understand the non-linear behavior of the transistor in an RC oscillator. Figure 1 shows a transistor Wien-bridge oscillator implementation circuit. This circuit produces a sine wave with an angular frequency of ω_o. The measured waveforms are shown in Figure 2.