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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

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At least 721 records · Page 40
All sourcesNASA NTRSDOE OSTI
NASA NTRS1969

Isolated, multiple-output voltage dc-to-dc converter

Isolated, multiple output voltage dc-to-dc converter provides power for television transmitter used in space vehicles. The isolation is accomplished by using a single-end switching transformer circuit. The converter is completely solid state.

Source record↗
NASA NTRS1969

Multiple-orifice throttle valve

Multiple-orifice throttle valve is not subject to cold welding in a vacuum environment and is compatible with strong oxidizing fluid. The valve is of all metal construction using simple components that do not slide or rotate and excludes static or dynamic seals.

Fitton, J. S., Jr.↗
NASA NTRS1969

Integrated circuit with multiple collector current source

Integrated circuit with multiple collector current source achieves the equivalent of a large number of resistors in a small area. Functional equivalents of a transistor reduce the size requirement for low power integrated circuits, providing an efficient alternative to the conventional diffused resistor process in integrated circuit fabrication.

Hellstrom, M. J.↗
NASA NTRS1969

Torsion system for creep testing with multiple stress reversals

Torsion system proves exploratory data on accelerated creep due to multiple stress reversals. Torsional testing of tubular specimens is best suited for reversed stress creep tests since large strains are obtainable while maintaining specimen geometry.

Lilienthal, P. A.↗
NASA NTRS1969

Multiple-mask chemical etching

Multiple masking techniques use lateral etching to reduce the total area of the high etch-rate oxide exposed to the chemical etchant. One method uses a short-term etch to remove the top layer from the silicon oxide surface, another acts before the top layer is grown.

Cannon, D. L.↗