Design and Development of a Controlled Constant Current Source Using Feedback Technique For Precision Resistance Calibration
Ajoy Sinha · IETE Journal of Education · 1985
This paper describes the principle and circuit details of a constant current source capable of measuring resistances upto 1 kilo ohm within an accuracy of 0.05 percent. without using conventional method of bridge balancing, thus increasing the speed of measurement. The principle of operation is based on the series pass regulation method for linear power supplies. The unit has been built using integrated circuits with very satisfactory results.