H - Electricity – 03 – H
Patent
H - Electricity
03
H
333/26, 365/36
H03H 7/01 (2006.01) H04B 3/14 (2006.01)
Patent
CA 1075779
ABSTRACT OF THE DISCLOSURE A compensating circuit has a frequency response curve into which can be introduced elevations or depressions of selected breadth at selected frequencies. The compensating circuit includes a plurality of tunable circuit stages associated with different frequency ranges. Each tunable circuit stage includes a resistor and a inductor connected in series with each other and to the rotor terminal of a differential capacitor having two stator terminals. The first stator terminals of the differential capacitors are con- nected to the first winding or windings of one or more differential transformers, while the second stator terminals of the differential capacitors are connected to the second winding or windings of the one or more differential transformers. The voltage induced across the one or more differential transformers is then employed to sup- plement the voltage which is being transmitted to the output re- sistor, of the compensating circuit by the input transformer of the compensating circuit.
257460
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