A METHOD FOR PROTECTING ELECTROEXPLOSIVE DEVICES FROM SPURIOUS ELECTRICAL INITIATION

Abstract

It is proposed to protect the EED from initiation from spurious signals by completely inclosing it in a metallic shield. To arm the device, a large dc current melts away the part of the shield that surrounds the firing leads to the EED. The novel feature is the use of a small silicon diode in series with the firing lead inside the shield to block the dc arming current from initiating the EED. An alternating current or a direct current of opposite polarity can then be used to fire the EED in the usual way at a later time. The advantage of separating the arming and firing functions is that the arming current may be made much larger than any available spurious signal. The firing sensitivity of the EED may be any value required by other design considerations such as limited available firing current. If the diode is not used, the fusible shunt merely lowers the EED sensitivity; and firing occurs at arming.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1960
Accession Number
AD0632111

Entities

People

  • R. R. Potter

Organizations

  • Naval Surface Warfare Center Dahlgren Division

Tags

Communities of Interest

  • Advanced Electronics
  • Weapons Technologies

DTIC Thesaurus Topics

  • Alternating Current
  • Capacitors
  • Differential Equations
  • Direct Current
  • Electromagnetic Radiation
  • Equations
  • Firing Circuits
  • Heat Capacity
  • Heat Energy
  • Heat Of Fusion
  • Latent Heat
  • Materials
  • Radiation
  • Resistance
  • Steady State
  • Thermal Conductivity
  • Voltage

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Rocket Propulsion.
  • Strategic Security Studies