Digital display transistorized bridge

Summary

The testing of the model has shown that the instrument operates reliably and provides resistance measurements in the range of 0–100 ohm with an error of 0.2 ohm.

It should be noted that, with a small internal resistance of the bridge supply source, the reactance of the measured resistances has no effect on the measurement results, since during balancing the current in the bridge arm containing R₁ is not changed.

The above investigation can be used for designing and mass production of miniature automatic transistorized digital-display ohmmeters.