REPEATER, TELEGRAPH TH-38 () /G.

Abstract

This research concerns the design, development and fabrication of 20 Telegraph Repeaters TH-38 ( )/G. The repeater is designed to operate in three different modes; half duplex, full duplex and half duplex-full duplex. Using the converter, circuits of differing characteristics may be interconnected and normal traffic established. A prime requisite is to achieve a Mean Time Between Failure (MTBF) of 57,000 hours. Temperature and life test conducted on the output keyer proved the acceptability of this switching scheme. The transistor keyer was adopted as the method of keying the output line. The redesign of the power supplies resulted in a significant improvement in the MTBF rate. The regulation was improved and the output ripple reduced in addition to achieving a more reliable design. Each portion of the TH-38 was thoroughly tested over the temperature range and all operating modes checked. The unit meets or exceeds all of the requirements that were checked to date. (Author)

Document Details

Document Type
Technical Report
Publication Date
May 01, 1962
Accession Number
AD0282165

Entities

People

  • H. E. Fidler
  • R. A. Cauble
  • R. D. Squires

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acceptability
  • Converters
  • Fabrication
  • Life Tests
  • Power Supplies
  • Regulations
  • Repeaters
  • Switching
  • Transistors

Readers

  • Integrated Circuit Design and Technology.
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  • Software Engineering