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与一般的文氏电桥振荡器不同,这个电路只用一个电位器来实现频率控制.这是由于在桥路的两臂中,元件值比取得很大,这样其中一个电阻改变所引起的网路衰减,只是略有变化,而这样衰减的变化,就可以在自持放大器的负反馈支路中采用一般的热敏电阻加以补赔.此电路中,当电位器从零变到150KΩ时,文氏
Unlike a typical Wien-bridge oscillator, this circuit uses only one potentiometer for frequency control because of the large component ratio in both arms of the bridge, so that one of the resistance changes causes the net Road attenuation, only a slight change, and this change in attenuation, self-sustaining amplifier can be negative feedback branch to use general thermistor to compensate.In this circuit, when the potentiometer changes from zero to 150KΩ, the text ’S