Modification of a commercial admittance bridge to measure large conductances
- 1 September 1977
- journal article
- research article
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 48 (9) , 1207-1211
- https://doi.org/10.1063/1.1135222
Abstract
The modification of the commercial General Radio 1615 admittance bridge to measure high conductances is presented in detail. The restriction of limited phase angle at constant resolution in either component of admittance is removed by this modification. In addition to increasing the conductance range by a factor of 100 over the original specification, the conductance circuitry has been arranged to permit a ten‐to‐one internal comparison between the conductance standards. When the voltage scaling transformer is used, a maximum conductance of 11.11 mmho can be measured at somewhat reduced accuracy. Design criteria for the conductance unit’s construction are presented. The usable frequency of the instrument is extended from 10 to 100 kHz, and data reflecting the accuracy of measurements of conductances are presented.Keywords
This publication has 1 reference indexed in Scilit:
- Low Frequency Bridge for Guarded Three-Terminal and Four-Terminal Measurements of AdmittanceReview of Scientific Instruments, 1969