Accession Number : ADD006198

Title :   Multi-Purpose Digital Measuring Apparatus.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Vermeers,Stanley L

Report Date : 17 Jul 1979

Pagination or Media Count : 13

Abstract : Apparatus for selectively measuring voltage, resistance, and time duration of an event, each of which is associated with an electrical network, includes a device for providing a first train of digital pulses, the frequency of the pulse train being related to an analog voltage coupled there to. The measuring apparatus also includes a clock for generating a second train of digital pulses of fixed frequency and a constant current source to be coupled to a resistive element being measured by the apparatus. The apparatus further includes counters selectively receiving one of the digital pulse trains for counting the number of pulses received during a selected time period, and for providing a digital output in which the value of a quantity measured by the apparatus is encoded. A display coupled to the counter provides a visible numerical display of a measured value at the conclusion of the selected time period, and control means couples a plurality of binary control signals to the counters to determine the duration of each time period. (Author)

Descriptors :   *Patents, *Digital systems, Voltmeters, Ohmmeters

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE