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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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Magnetic coupling between input and power handling circuits isolates high voltage. A feedback regulator samples the ion source bias current and provides deviation signals to a magnetic amplifier pulse modulator. The pulse modulator controls the dc to ac power inverter which in turn, controls the emission current.
Flight control magnetic source interaction with ionized gas induced by bow shock ahead of blunt body in hypersonic flow
Multivibrator circuit provides a low-frequency sine wave output without using a low-frequency power transformer or filter components. This circuit, utilizing two transistors and a magnetic core, represents a reduction in complexity, size, and weight over similar units.
Nondissipatively regulated variable frequency DC TO DC converter with variable on time and variable off time
Phosphorous-proton nuclear magnetic resonance coupling constants - sign determination
Relative signs and magnitudes of proton nuclear magnetic resonance coupling constants in phosphorus compounds
Geminal and vicinal proton-proton couplings - nuclear magnetic resonance spin-spin coupling
Interactions of magnetic materials using coupled films with closed flux geometry for use in magnetic memories
Magnetic-coupled multivibrators containing two or more square-loop cores with multiple windings in a single transformer package, provide indirect frequency control and improved operational characteristics. This multivibrator can be used for power oscillators, nonlinear magnetic circuitry and telemetry circuits.
Portable battery charger operates at about 20 kHz to take advantage of relatively low weight and low acoustical noise of ferroresonant circuits operating in this frequency range. Charger split into stationary unit connected to powerline and mobile unit connected to battery or other load. Power transferred to mobile unit by magnetic coupling between mating transformer halves. Advantage where sparking at electrical connection might pose explosion hazard or where operator disabled and cannot manipulate plug into wall outlet. Likely applications for charger include wheelchairs and robots.
Gapped toroid magnetically coupled to a delay line provides continuous adjustment of the time delay line signal retrieval. A rotating screw moves the toroid pickup parallel to the delay line. This device can be used in signal detection devices and instrumentation equipment.
Centrifugal separator suspended in the fuel tank of a space vehicle selects and vents gas vapor at zero gravity. Escaping vapor is used to drive an expander turbine that is magnetically coupled to the separator.
Variable frequency magnetic coupled multivibrator with temperature compensated frequency control circuit
Variable frequency magnetic coupled multivibrator with output signal of constant amplitude and waveform
Systems analysis and design of gravity gradient satellites using viscous coupling between earths magnetic and gravitational fields
Relative signs of nuclear magnetic resonance proton-proton coupling constants in styrene sulfide and styrenimine
Fluorine-19-fluorine-19 and hydrogen-1-fluorine-19 nuclear magnetic resonance coupling constants
Plasma oscillation modes perpendicular to magnetic field used to study energy conversion by wave coupling across density discontinuity