FIELD: measuring instrumentation.
SUBSTANCE: low-frequency filter includes operational amplifier with its inverting input connected to the first output of first resistor and further via second resistor to the output of operational amplifier, non-inverting input of which is connected via third resistor to first input bus and via first capacitor to the common bus; additionally the filter features fourth resistor, second and third capacitor, second input bus connected to second output of the first resistor and to via the second capacitor to the common bus which is connected via the fourth resistor to the non-inverting input of operational amplifier, inverting input of which is connected via the third capacitor to output of operational amplifier.
EFFECT: expanded dynamic frequency range of first-order low-frequency filter for symmetrical signal.
2 dwg
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