Abstract:
A technique for the fabrication of a sealed remanent reed, selflatching magnetic switch is described. Appropriate magnetic properties are developed through a series of processing steps terminating first in a strand anneal of round wire; secondly a stamping operation which results in some mechanical working and, consequently, physical hardening of the magnetic alloy; and, finally, in a terminal phase-precipitation anneal.
Abstract:
Apparatus automatically determines the ratio of the contact force at saturation and the retractile force of magnetic reeds by measuring the magnetic flux at saturation and release of a sealed contact switch. Additionally, the ampere-turns of the operate and release points of the switch are monitored to test the switch.