PULSE CODE MODULATION STUDY CONTRACT

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)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0271900

Entities

People

  • B. Lerpold
  • Clarence M. Shapiro

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Construction
  • Contracts
  • Diodes
  • Impedance
  • Modulation
  • Pulse Code Modulation
  • Test And Evaluation
  • Transistors
  • Tunnel Diodes

Readers

  • Computer Engineering
  • Electronics Engineering