Accession Number:

AD0654012

Title:

THE CLOSED LOOP CHARACTERISTICS OF AN AUTOMATIC DIRECT READOUT IMPEDANCE BRIDGE,

Descriptive Note:

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK IONOSPHERE RESEARCH LAB

Personal Author(s):

Report Date:

1967-03-20

Pagination or Media Count:

175.0

Abstract:

The capabilities and limitations of an automatic complex impedance bridge were investigated. The bridge configuration selected as the most desirable for this effort is the inductively coupled ratio arms bridge. The operational characteristics of the bridge were studied in detail. In particular, relationships were developed relating the accuracy of the bridge measurements to the equivalent circuit of the bridge. The control mechanism for the balancing process was designed and simplified by exploiting the inherent characteristics of the bridge. A transformerless ratio arms bridge was proposed for high frequency applications where the inherent inductances of transformers might prove to be a factor limiting the accuracy of impedance measurements. The critical parameters of this bridge were also investigated in detail. Author

Subject Categories:

  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE