| 摘要 |
<p>A signal-shaping network comprising a differential amplifier (G) having an output and an inverting (A) and a non-inverting (B) input between which a signal source (S) is connected. When a differential amplifier is used particularly for the measuring of very weak biosignals, interference signals may easily make the measuring completely impossible. In the signal-shaping network according to the invention, interferences have been eliminated in such a way that an integrating feedback circuit (1a; 1b) is connected between the output and one input of the differential amplifier (G) and/or a derivative feedback circuit (2a) is connected between the output and the other input of the differential amplifier. In this way an adaptive differential amplifier is achieved which attenuates slow interference signals and/or rapid interference signals.</p> |
