Accession Number:

AD0271900

Title:

PULSE CODE MODULATION STUDY CONTRACT

Descriptive Note:

Corporate Author:

PHILCO CORP PHILADELPHIA PA

Personal Author(s):

Report Date:

1961-12-01

Pagination or Media Count:

1.0

Abstract:

Tunnel diode, magnetic, and transistor investigations continued. Circuits were developed through construction, testing, and analysis, to determine optimum combination of logic. A tunnel diode encoder was designed and although successful operation was achieved, noise pickup and circuit requirements regarding voltage and component tolerances were so unfavorable that tunnel diode logic was ruled out. Parallel and serial magnetic systems were constructed and tested. In general the magnetic designs were highly successful and the system concepts were proven entirely feasible. Several basic circuits gates, flipflops and special circuits high-input-impedance emitter follower, analog counter were brought to final design. After evaluation of tests performed on models of alternate design diode vs. transistor, several final-configuration conclusions were drawn. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE