| 摘要 |
FIELD: radio engineering, automatic control, and telemechanics. SUBSTANCE: active RC filter has series- connected resistive input-signal voltage divider, integrating amplifier built around operational amplifier, and summing amplifier built around operational amplifier with negative feedback circuit applied to them, series-connected scaler built around operational amplifier and capacitor inserted between respective tap of resistive input-signal voltage divider and input of summing amplifier built around operational amplifier; novelty is that noninverting input of operational amplifier of integrating amplifier is connected to inverting input of operational amplifier of scaler. EFFECT: enlarged frequency range and/or improved signal rejection at zero frequency. 1 dwgp
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