On compensating the source resistance of the familiar Wien bridge networks

A previous contribution in the literature dealt with an interesting way of compensating for the source resistance in the familiar bandpass and bandstop forms of the Wien network in the sense that the centre frequency is maintained at the value for an ideal source. In the present article, the author makes a detailed analysis of these circuits, and shows that in both configurations, not only the centre frequency is maintained constant, but the frequency response can also be improved thereby.