Test of Head Telephone Receivers, Type CAU-49003 (Automatic Electric Company)

Abstract

The receivers were tested to determine the following characteristics: (a) Compliance with specifications as to dimensions and materials. (b) Operation at high energy input (50 milliwatts). (c) Effect of mechanical shock. (d) D.C. resistance. (e) Impedance at the frequency of primary resonance. (f) Efficiency factor at the frequency of primary resonance. (g) Primary resonance frequency. (h) Magnitude of secondary resonance peak. (i) Band width of primary resonance peak. (j) Band width of secondary resonance peak. (k) Effect of humidity on sensitivity. (l) Effect of humidity on insulation resistance. (m) Effect of humidity on materials.

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Document Details

Document Type
Technical Report
Publication Date
Sep 20, 1938
Accession Number
AD1155986

Entities

People

  • R. W. Armstrong

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Efficiency
  • Energy
  • Frequency
  • High Energy
  • Humidity
  • Impedance
  • Insulation
  • Materials
  • Resistance
  • Resonance
  • Sensitivity
  • Specifications

Fields of Study

  • Physics

Readers

  • Electronics Engineering
  • Forest Ecology
  • Software Engineering

Technology Areas

  • Microelectronics