Title :
Elements of general theory of null-balance circuits
Author :
Filanovsky, I.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alberta Univ., Edmonton, Alta., Canada
Abstract :
The null-balance method of output indication is widely used in instrumentation techniques and sensor applications. Yet, the theorems and methods of general circuit theory that are the basis of the null-circuit analysis and design have nearly disappeared from the modern books on network theory. In this paper the elements of general theory of null-balance circuits are presented. The relationships between two-port parameters of passive null-balance circuits are described, and the applications are demonstrated using bridge circuits. The systematic calculation of null-balance circuit sensitivity is given, and this procedure shows the importance of the theory of autonomous two-ports and the compensation theorems in the theory of null-balance circuits
Keywords :
bridge circuits; compensation; passive networks; sensitivity analysis; two-port networks; autonomous two-ports; bridge circuits; circuit analysis; circuit sensitivity; compensation theorems; instrumentation techniques; output indication; passive null-balance circuits; sensor applications; two-port parameters; Application software; Books; Bridge circuits; Capacitance measurement; Electrical resistance measurement; Hip; Inductance measurement; Instruments; Read only memory; Voltage;
Conference_Titel :
Circuits and Systems, 1998. Proceedings. 1998 Midwest Symposium on
Conference_Location :
Notre Dame, IN
Print_ISBN :
0-8186-8914-5
DOI :
10.1109/MWSCAS.1998.759446