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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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Electronic amplifier contains matched pair of metal oxide semiconductor field effect transistor devices which have high input impedance and long-term stability. Thermistor in feedback loop provides temperature compensation for large drifts in the sensor.
Amplifier uses low Q input and output circuitry incorporating four variable air dielectric capacitors. Performance over conventional designs includes - increased power output, decreased likelihood of parametric oscillation, and increased thermal stability.
Prism plus image amplifier panel provides visual image of many infrared spectral lines from carbon arc impregnated with metal compound. Different metal compounds generate various desired spectra. Panel also aligns and focuses simple spectroscopes for detecting spectral lines inside and outside visible region.
Increasing power conversion efficiency of electronic amplifiers by power supply switching
Analytic evaluation of depressed collector for linear beam microwave amplifiers
Silicon controlled rectifier pulse gate amplifier for blocking false gating caused by negative transient voltages
Classification and signal analysis of pulse width modulated amplifiers
Overcurrent protecting circuit for push-pull transistor amplifiers
Serrodyne traveling wave tube reentrant amplifier for synchronous communication satellites operating at microwave frequencies
Design and performance of injected beam crossed field amplifier
Breadboard model of broadband pulse width modulated amplifier
Development of stable electronic amplifier adaptable for monolithic and thin film construction
Clamped amplifier circuit for horizon scanner enabling amplification and accurate measurement of specified parameters
Development of electromagnetic wave transmission line circulator and application to parametric amplifier circuits
Iron doped rutile wideband maser amplifier with low signal-to-noise ratio
Broadband distribution amplifier with complementary pair transistor output stages
High efficiency transformerless amplitude modulator coupled to RF power amplifier
Digital data handling circuits for pulse amplifiers