A Self-Checking Cartesian A/C Potentiometer for Use in the 100c/s to 10 kc/s RangeElectronic Engineering (1965)
A new form of Cartesian a.c. potentiometer, base upon a set of CR networks is described, and the theory , design and applications are di cussed in terms of a model instrument.
By a self-checking routine the performance para eters of the model are calibrated in absolute terms. Subsequently the precision of the calibration is monstrated by using the model to determine vector
voltage ratios in some circui of critical performance.
The frequency range runs in 100 c/s steps from 100 c/s to 10 kc/s, and by an artifice interpolations within this step are possible. A frequency-bridge forms a part of the Cartesian network and serves to calibrate the associated driving oscillator. Although not precision built, the model is capable of 0·5 per cent measurement accuracy, which can be improved to 0·1 per cent by adopting a replication routine.
Publication DateSummer July, 1965
Citation InformationEdmund Ramsay Wigan. "A Self-Checking Cartesian A/C Potentiometer for Use in the 100c/s to 10 kc/s Range" Electronic Engineering (1965) p. 442 - 449
Available at: http://works.bepress.com/edmund-wigan/22/