Accession Number : ADD014351

Title :   Magnetic Amplifier Housing and Detector for an Improved Tamper Alarm System.

Descriptive Note : Patent, Filed 17 Jun 88, patented 12 Sep 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Evans, Mark M ; Kruchowy, Roman V

Report Date : 12 Sep 1989

Pagination or Media Count : 6

Abstract : A magnetic amplifier housing uses a base, dowel and shunt to magnetizable material to concrete the magnetic field of a ring magnet through a HAll Effect transistor to provide an improved detector device with increased gain. The detector device cause polarity reversal when tampered with, ensures positive mechanical alignment of the transistor and mechanical components, and protection of the transistor from mechanical damage. Patents. (RRH)

Descriptors :   *DETECTORS, *HALL EFFECT, *MAGNETIC AMPLIFIERS, *PATENTS, *TRANSISTORS, *WARNING SYSTEMS, ALIGNMENT, CONCRETE, DAMAGE, HOUSING(DWELLINGS), MAGNETIC FIELDS, MAGNETS, MATERIALS, MECHANICAL COMPONENTS, MECHANICAL PROPERTIES, POLARITY, PROTECTION, REVERSIBLE, RINGS

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE