A Proposed Resistance-to-Time Converter with Switching Impulse Calibrators for Application in Resistive Bridge Sensors

M. Zahangir, Sheroz Khan, I. Adam, K. Abdul Kadir, A. N. Nordin, S. N. Ibrahim


This paper presents a simple resistance-to-time converter. It consists of two voltage comparators, a ramp voltage generator, two logic gates and impulse voltage calibrators. A square-wave generator circuit is suggested in this paper. The design is simple and independent of the OPAMP offset issues. The resulting square-wave is rectified to get its DC equivalent and to a triangular output; the two outputs are applied to a comparator for generating a digital output with a duty cycle proportional to a change in resistance upon which is dependent the DC.


resistance-to-time converter; ramp voltage generator; impulse voltage calibrators

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DOI: http://doi.org/10.11591/ijeecs.v11.i1.pp47-50
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