| 摘要 |
PURPOSE: To eliminate the need for use of an expensive component or manual adjustments only by the addition of a few components by inverting and amplifying a feedback quantity and adding the value obtained by adding its output to the output of a multiplier. CONSTITUTION: A dotted-line part is added to a conventional circuit. The dotted- line part constitutes a feedback loop and in a stationary state, the value obtained by integrating a waveform at a point B becomes zero. In concrete, even if a waveform, for example, at a specific point deviates and its center is not zero (namely, having a DC component), the DC component appears at the point B, so an additional circuit operates so as to correct the DC component, thereby reducing the DC component at the specific point. This operation is carried on until the DC component at the specific point is eliminated and there is eventually no DC component at the specific point in the stationary state. Thus, the feedback quantity is inverted and amplified and the value obtained by integrating its output is added to the output of the multiplier. |
