| 摘要 |
<p>A rectifier circuit is disclosed in which the levels of an input signal and a reference signal are compared, and the polarity of the equivalent resistor (31) is set at positive or negative depending on the result of the comparison. The equivalent resistor (31) is connected, as an input resistor, to a differential amplifier (34). A feedback resistor (Rf) is connected between the input and output of the differential amplifier (34). This arrangement enables the rectifier circuit. with only a single differential amplifier, to perform the rectifying operation with a gain.</p> |
