DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click
HERE to register or log in.
Accession Number:
AD1155986
Title:
Test of Head Telephone Receivers, Type CAU-49003 (Automatic Electric Company)
Report Date:
1938-09-20
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.
Document Type:
Conference:
Journal:
Pages:
11
File Size:
3.11MB
Contracts:
Grants:
Distribution Statement:
Approved For Public Release
