Investigation of an Improved Design for a Break-In Relay
[Technical Report, Formal Report]
NAVAL RESEARCH LAB WASHINGTON DC
Pagination or Media Count:
A design of break-in relay is proposed which uses the tested principles of the Creed relay for the magnet system, operating the contact system through the angular motion of a shaft mounted on the armature. The magnet system has no springs. It depends on the magnetic relations between a permanent magnet and a soft iron armature, the flux through which is controlled from the sending key. The contact system consists of two fixed terminals for each circuit joined by the contact arm on the armature shaft. Endurance and operating test show reliability of performance and freedom from keying transients.