A semiconductor integrated circuit having microminiature active and/or passive elements in which a crystallographic surface of a semiconductor body lies in the crystallographic plane and anisotropically etched regions with sloped crystallographic surface walls isolate adjacent semiconductor elements and/or define the boundaries of junctions and/or resistance regions formed in an epitaxial layer of said semiconductor body. The structure enables a subsurface region of the epitaxial layer to act as...

An integrated circuit package includes conductors (3) bonded between a cover (9) and a base (13) which has a cavity (14) in which a chip (12) is received. Each conductor (3) joins an attach pad (1) which protrudes into the cavity (14) with a contact (2) which projects (7, 8) through a window (10) in the cover (9). When bolted (20) to a printed circuit board (16), the contact projections (7, 8) make contact with contact areas (18) on the board.

Method for fabricating a semiconductor integrated circuit structure. Improved control over the number of active base zone impurities, and therefore, over transistor gain, is achieved by ion implanting a buried base zone into an epitaxial layer formed on a substrate containing a collector, and then introducing impurities into the epitaxial layer portion substantially only above the buried base zone to form an emitter zone. Additionally, deep collector contact impurities are implanted through a si...

A method of forming an enhancement mode and a depletion mode transistor on a single substrate of a first conductivity type wherein each of the transistors has a pair of second conductivity type source and drain regions which are separated by a channel region and wherein an insulating layer is present on the surface of the substrate. The improvement comprises the steps of introducing a first conductivity type impurity in the substrate at the surface thereof, except in the channel region of the de...

A dielectrically isolated integrated circuit containing at least one polycrystalline resistor between and dielectrically isolated from adjacent single crystal semiconductor islands.

An integrated attenuation element having a variable attenuation characteristic for high frequency signals comprises a semiconductor body of one conductivity type having at least three zones of the opposite conductivity type arranged in one face thereof. One of the zones serves as an input for high frequency signals and another of the zones serves as an output, while the third zone serves as a control electrode. An attenuation circuit which employs such an element includes means for applying cont...

Described is an integrated circuit comprised of a hall cell, a differential amplifier and a current source; that operates as a sensitive magnetic-field-to-voltage transducer being essentially independent of ambient temperature changes.

A system is disclosed incorporating a combustion heat engine, mechanically coupled to drive an electrical generator and heat-transfer coupled to drive a refrigeration means, with appropriate control structure. The mechanical energy of the engine is employed for the generation of electrical energy while the heat of the engine (normally wasted) is applied to drive a refrigeration structure or alternatively to provide space heat. As disclosed, heat is transferred from the engine to the refrigeratio...

The integrated parameter display operates with a programmer and multiplexer to display an unlimited number of meters. The meter faces are provided on a film strip which are selectively projected onto a screen. The meter reading is superimposed on the selected meter face by a galvanometer in accordance with the value of a parameter being measured. The meter faces are placed on a film strip with a coded address adjacent thereto. The desired address is punched into a keyboard and compared with the ...

A control arrangement for sewing machine is disclosed including information carriers dictating repetitive operational patterns for the sewing machine stitch-forming instrumentalities which may be rendered selectively effective, and means rendered effective simultaneously with the selection of each information carrier for shifting the control mechanisms of the sewing machine into discrete positions so coordinated with the selected pattern as to ready the sewing machine for stitching a predetermin...