Patent · US Expired

Technique for determining the values of circuit elements in a three terminal equivalent circuit

US4797622A · kind A · utility

0Cited by

6References

20Claims

0Family size

Assignee

American Telephone and Telegraph Company, AT&T Bell Laboratories · US

Inventor

Chia-Lung Lin · Xihu, TW

Key dates

Filing date	Apr 1, 1987
Grant date	Jan 10, 1989
Priority date	—
Expiry date	Apr 1, 2007

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/50
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A technique which improves the accuracy of determining the circuit element values in a three terminal equivalent circuit is disclosed. The improvement results from the use of at least one ratio wherein the numerator and denominator of each ratio is a different function of at least one measurement of the three terminal equivalent circuit. Each ratio is representative of the true value of one preselected circuit element to another preselected circuit element value. This technique can be used for DC or AC analysis of the equivalent circuit and can be adapted for different sources of measurement errors.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.