WIDEBAND SELECTIVE RC-FILTER WITH DIFFERENTIAL INPUT Russian patent published in 2019 - IPC H03H11/12 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment. Broadband selective RC filter with differential input comprises first and second differential inputs of device, first and second differential outputs of device, output operational amplifier with inverting and non-inverting paraphrase outputs, and its non-inverting output is connected to the first output of the device, and the inverting output is connected to the second output of the device, the first, second and third frequency-setting resistors, the first, second, third, fourth, fifth and sixth frequency-setting capacitors.

EFFECT: increasing the guaranteed attenuation of the amplitude-frequency characteristic of the active RC-filter for processing piezoelectric signals of sensors outside the band-pass of the useful signal, which is ensured by a symmetrical differential input.

1 cl, 5 dwg