US PATENT SUBCLASS 326 / 134
.~.~ Negative resistance diode (e.g., tunnel, gunn, etc.)

Current as of: June, 1999
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326 /   HD   ELECTRONIC DIGITAL LOGIC CIRCUITRY

104  DF  FUNCTION OF AND, OR, NAND, NOR, or NOT {7}
133  DF  .~ Diode {1}
134.~.~ Negative resistance diode (e.g., tunnel, gunn, etc.)

DEFINITION

Classification: 326/134

Negative resistance diode (e.g., tunnel, gunn, etc.):

(under subclass 133) Subject matter includes a diode characterized by an operating current-voltage plot having a portion with a negative slope.

(1) Note. Devices such as tunnel diodes, back diodes, or four or more layer diodes are proper for this subclass, as well as devices which switch on or avalanche as a result of negative resistance conduction induced by increasing an electrical field condition (e.g., IMPATT or GUNN effect elements).

SEE OR SEARCH THIS CLASS, SUBCLASS:

132, for a circuit having bipolar transistor and negative resistance diode logic functions of AND, OR, NAND, NOR, or NOT.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits, and Systems,

568+, for miscellaneous negative resistance circuits.