首页   按字顺浏览 期刊浏览 卷期浏览 A modified wide-range shunted-T circuit for the measurement of impedance in the a.f., r...
A modified wide-range shunted-T circuit for the measurement of impedance in the a.f., r.f. and v.h.f. ranges

 

作者: D.Karo,  

 

期刊: Proceedings of the IEE - Part III: Radio and Communication Engineering  (IET Available online 1953)
卷期: Volume 100, issue 63  

页码: 25-28

 

年代: 1953

 

DOI:10.1049/pi-3.1953.0004

 

出版商: IEE

 

数据来源: IET

 

摘要:

The paper describes a shunted-T circuit provided with a voltage divider, consisting of two resistors or two capacitors, at the input, connected in series across the source.The shunt is connected across the source, whilst the T-circuit is connected across the lower-voltage part of the voltage divider. In this manner the voltages of the shunt and the T-circuit are made different, although they are provided by the same source. The balance condition depends, therefore, not only upon the values of the impedances in the circuit, but also upon the values of the components of the voltage divider.The circuit therefore has a multiplying ratio, or ratio arms, and thus has a much wider range of measurement for a given set of standards. Furthermore, by means of measurement with an additional standard in the circuit, the angular frequency can be made to disappear from the balance equations.Tests have been made over a wide range of resistance, inductance and capacitance, with frequencies varying between 1000 c/s and 50 Mc/s. The accuracy varied between ±0.020% and about ±1%, depending upon the frequency and the standards used.

 

点击下载:  PDF (374KB)



返 回