Accession Number:

AD0745448

Title:

Low-Frequency Digital Phase Meter,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Report Date:

1972-03-16

Pagination or Media Count:

9.0

Abstract:

Phase difference measurements of quickly occurring changes can be obtained by a circuit with a digital display. The sinusoidal voltages which are to be compared are first converted into square waves and their durations are filled with h.f. pulses from a crystal generator. The packets of pulses are assessed by a binary counter and the results are passed on to the arithmetical unit. Another input of the arithmetical unit is supplied with packets of pulses produced in a second branch by filling spaces of square waves by switches with h.f. pulses from a crystal generator. In a mixer half waves detected are combined before the application to the arithmetical unit. Author

Subject Categories:

  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE