Frequency selective circuit arrangements专利检索-终端电阻电阻器电气元件和设备专利检索查询-专利查询网

Frequency selective circuit arrangements

阅读：15发布：2022-01-17

专利汇可以提供Frequency selective circuit arrangements专利检索，专利查询，专利分析的服务。并且A frequency selective circuit arrangement having a resistor network connected to a supply line and feeding an auxiliary four terminal filter network whose attenuation characteristic curve is variable under the control of means for varying the terminating resistance of said four terminal network, the impedance of the elements having a predetermined frequency position for the peaks of the attenuation characteristic of the arrangement.，下面是Frequency selective circuit arrangements专利的具体信息内容。

权利要求

1. A frequency selective circuit arrangement for use as an adjustable correcting device, in which a resistor network is provided for connection between a signal supply line and an auxiliary four-terminal network connected to a reference potential and the attenuation of said correcting device is varied by adjustment of the terminating impedance of saiD four-terminal network, the self-capacitance Ce and the supply line inductance Lz of a variable terminating resistance Ra being compensated by a reactive half-section filter combination having a series arm which contains a capacitor Ck having a capacitance equal to l/ omega m2 Lz and a shunt arm which contains a coil Lk having an inductance equal to 1/ omega m2 Ce, said filter combination being arranged in such manner that said coil is connected nearest to said four-terminal network, and fm, which equals omega m/2 pi , signifies the variation middle frequency.

2. A circuit arrangement as claimed in claim 1, in which said resistor network is connected to a plurality of auxiliary four-terminal networks at least, one more of which is provided with said compensating circuit.

3. A circuit arrangement as claimed in claim 1, in which the terminating resistance of said auxiliary four-terminal network is comprised of a switch whose separate switch positions connect respective fixed resistances.

4. A circuit arrangement as claimed in claim 1, in which said terminating resistance of said auxiliary four-terminal network consists of a thermistor.

5. A circuit arrangement as claimed in claim 1, in which the capacitance of said series capacitor has a value of infinity.

6. A circuit arrangement as claimed in claim 1 in which the inductance of the said shunt coil has a value of infinity.

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Frequency selective circuit arrangements

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