Development of PVF2 Lightweight Portable Loudspeaker.

Abstract

A PVF2 Loudspeaker is described which is very lightweight and delivers 85 dB SPL across the 400-4000 cycle audio band, for use with radio sets AN/PRC-77 and AN/PRC-70 which provide the signal and power for the transducer. The diaphragm is made of 4 sheets of PVF2, a piezoelectric film with both sides coated with a thin aluminum film which was found to be very unstable in handling and flaking in humidity. The diaphragm presents a capacitive load to the amplifier requiring considerable power from the radio batteries, therefore, the loudspeaker is considered not suitable for man-pack battery operation. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1979
Accession Number
ADA076952

Entities

People

  • D. W. Mackiernan

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Electric Fields
  • Electroacoustic Transducers
  • Elements
  • Films
  • Fluorides
  • Frequency
  • Lightweight
  • Loudspeakers
  • New Jersey
  • Power Levels
  • Skeletal Muscle
  • Switches
  • Switching
  • Thin Films
  • Transducers

Readers

  • Acoustics.
  • Electronics Engineering
  • Materials Science and Engineering.