| 摘要 |
<p>An input signal is outputted as a first output signal, while an inverting/amplifying circuit, which receives the input signal and a comparison voltage, is used to invert and amplify a voltage in accordance with the input signal to output it as a second output signal. Then, the first and second output signals are compared, and a capacitor is charged to control the comparison voltage in such a manner that the DC voltage of the second output signal is equal to the DC voltage of the first output signal. In this way, a simple circuit is used to surely cancel a DC offset voltage between the first output signal (non-inverted output signal) and the second output signal (inverted output signal).</p> |
