NONLINEAR BRIDGE FOR MEASURING ELECTROTHERMAL CHARACTERISTICS OF BRIDGEWIRES

Abstract

The measurement of the thermal time constant and the heat loss factor of a bridgewire from the amplitude and phase shift of the third harmonic generated in it by a sinusoidal current has been shown feasible. The theory and mathematics have been presented and an electronic instrument which was built for the measurements has been described and detailed. The new instrument greatly accelerates the measurements of the thermal time constant and the heat loss factor. The instrument will be particularly useful for making measurements on electro explosive devices con taining bridgewires of very low thermal coefficients of resistivity, such as tophet -C. The measurements made with the new instrument show the results to be in good accord with the theory and mathematics, and in addition indicate that in general the thermal characteristics of a bridgewire can be described by the constants of the simple power balance differential equation.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1963
Accession Number
AD0409852

Entities

People

  • Louis A. Rosenthal

Organizations

  • Naval Ordnance Laboratory

Tags

Communities of Interest

  • Counter WMD
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Amplitude
  • Coefficients
  • Differential Equations
  • Engineering
  • Equations
  • Explosive Devices
  • Explosives
  • Frequency
  • Heat Loss
  • Measurement
  • Munitions
  • Ordnance Laboratories
  • Phase Shift
  • Physics Laboratories
  • Weapons

Readers

  • Fluid Dynamics.
  • Plasma Physics / Magnetohydrodynamics
  • Rocket Propulsion.

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems