Initial Peak Surge Current Detection Circuits (open access)

Initial Peak Surge Current Detection Circuits

Test requirements for several components specifies that surge currents be monitored to determine if the initial peak surge current exceeds a certain predetermined amplitude. This report describes and evaluates two circuits which were developed by Organization 2451 to meet this requirement in production testing.
Date: February 1961
Creator: Conrad, Milo M.
System: The UNT Digital Library
Air-Gun Studies of Ferroelectric Materials (Second Printing) (open access)

Air-Gun Studies of Ferroelectric Materials (Second Printing)

Specimens of two ferroelectric materials, barium titanate and lead-zirconate titanate, have been subjected to high dynamic stresses by impacting them with a projectile accelerated by an air gun. The purpose of these tests was to supplement information previously obtained using high explosives to stress the ferromagnetic materials.
Date: February 6, 1958
Creator: Ripperger, E. A. & Beck, A. F.
System: The UNT Digital Library