1 results for Journal article, 1950

  • Frequency-sensitive switching circuit

    Earnshaw, J.B. (1956)

    Journal article
    The University of Auckland Library

    An open access copy of this article is available and complies with the copyright holder/publisher conditions. A frequency-sensitive switching circuit is described which automatically selects between two ranges of an otherwise conventional frequency meter by switching the leak resistor of the integrating circuit. The basis of the unit is a diode pump integrator operated as a nonlinear device to obtain maximum sensitivity. The sensitivity is such that the "on-off" backlash of the switching relay corresponds to less than 1% of the switching frequency.

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