FIELD: radio engineering, communication.
SUBSTANCE: invention relates to radio electronics and can be used as a pre-selector of a professional grade radio receiver. The tunable band-pass ARC-filter comprises a first capacitor connected to the input potential terminal of a device, a second capacitor connected to the output potential terminal of the device and two structurally identical general resistance converters, each comprising a first and a second operational amplifier, first, second and third resistors and a third capacitor, second leads of the first and second capacitors of which are connected to a common bus. The device further includes fourth, fifth, sixth, seventh, eighth, ninth and tenth capacitors and two electronic potentiometers.
EFFECT: high selectivity and enabling frequency tuning of the filter.
3 dwg
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