Fail-safe four leaded zener diode arrangement
AssigneeWestinghouse Air Brake Company
InventorAndrew Hufnagel
Life of this patent
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Abstract
This disclosure relates to a fail-safe voltage regulating arrangement including a current limiting resistor and a four leaded zener diode having two separate conductive leads electrically connected to the cathode electrode and two other separate conductive leads connected to the anode electrode for producing a constant d.c. voltage barring a critical component or circuit failure.
Claims6
A vital type of voltage breakdown device comprising, a body of semiconductive material having one region of one conductivity type and having another region of opposite conductivity type forming a junction therebetween and a first pair of separate conductors electrically contacting said one region of one conductivity type and a second pair of separate conductors electrically contacting said other region of the opposite conductivity type, and the junction between said one region of one conductivity type and said other region of opposite conductivity type is a multi-surface contiguous border,
A vital type of voltage breakdown device comprising, a body of semiconductive material having one region of one conductivity type and having another region of opposite conductivity type forming a junction therebetween and a first pair of separate conductors electrically contacting said one region of one conductivity type and a second pair of separate conductors electrically contacting said other region of the opposite conductivity type, and the top of said semiconductive body includes a plurality of conductive surfaces for accommodating said first and said second pair of separate conductors.
A vital type of voltage breakdown device as defined in calim 4, wherein the junction between said one region of one conductivity type and said other region of the opposite conductivity type is a substantially flat contiguous surface.
A vital type of voltage breakdown device comprising, a body of semiconductive material having one region of one conductivity type and having another region of opposite conductivity type forming a junction therebetween and a first pair of separate conductors electrically contacting said one region of one conductivity type and a second pair of separate conductors electrically contacting said other region of the opposite conductivity type, and said one region of one conductivity type includes a pair of conductive surfaces for accommodating said first pair of separate conductors and said other region of opposite conductivity includes a pair of conductive surfaces for accommodating said second pair of conductors.
Dependencies are inferred from the claim text.