Potential dividers with a constant output resistance

Conclusions

Above wye and chain-connected potential dividers can be used in all cases when normal dividers with discrete scales are used, if the condition of their use does not require a strictly constant input resistance. Such dividers can be successfully used in various automatic compensation measuring instruments with digital recording [5] and in devices which convert discrete coded information into voltages [4]. In these instruments the simple switching consisting of separate two-position elements is effectively used.

The possibility of reducing to a minimum the number of precision resistances in the composition of the divider and less strict requirement for the quality of contacts is of undoubted interest for metrology. Although in normal circuits for measuring emf these dividers cannot be used owing to their variable input resistance, they can still be used for comparative precision measurements.

These dividers will find wide and diverse application in cases when a constant output resistance is required, and the use of normal dividers involves inevitable errors; for instance, in two-stage potentiometer circuits, electronic models, grid electrical integrators, and various electrical checking devices.