Accession Number : AD0467538

Title :   DETERMINATION OF RESPONSES OF PROTECTED AND UNPROTECTED ELECTRIC INITIATORS TO ELECTRICAL STIMULI. SPECIAL TECHNICAL REPORT ON THEORY, PARAMETERS AND MEASUREMENT METHODS.

Descriptive Note : Rept. no. 1.

Corporate Author : GENISTRON INC COLLEGE PARK MD APPLIED RESEARCH DIV

Report Date : 04 JUN 1965

Pagination or Media Count : 77

Abstract : In general, the effectiveness of in-line devices for protection of electric initiators from radio frequency electromagnetic hazards depends upon absolute parameters of the loaded devices plus parameters of the external electrical circuits. The absolute parameter minimum insertion loss (ILr) has been defined and its determination has been derived. This parameter is independent of generator source impedance. Definitions and methods of measurement of transfer functions and impedances required for its calculation are described. The application of each of the device parameters to assist in making a choice among available protective devices is described, and examples of use of the parameters are given, illustrating the direct comparison of protective devices for worst-case application. Appendix I contains a derivation of an exact solution for Xgr, the critical source impedance which produces minimum insertion loss for a given loaded protective device at a given frequency. Appendix II contains a description of a simple graphical method for determining minimum insertion loss (ILr). (Author)

Descriptors :   (*EXPLOSIVES INITIATORS, ELECTROMAGNETIC RADIATION), HAZARDS, MEASUREMENT, ELECTROMAGNETIC SHIELDING, RADIOFREQUENCY, ELECTRICAL IMPEDANCE, STANDING WAVE RATIOS, GENERATORS, ELECTRICAL RESISTANCE, GRAPHICS.

Distribution Statement : APPROVED FOR PUBLIC RELEASE