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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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To prevent premature triggering of a blocking oscillator, a smaller magnetic core is added to the conventional oscillator circuit. This serves as a second blocking oscillator and has a lower triggering threshold.
Inverse-pinch triggered gap switch converted to gas-triggered operation by adding discharge constrictor and ablating inner column insulator
Trigger circuit with two series-connected SCR triggers an ignitron switch used to discharge high-energy capacitor banks. It does not require a warmup period and operates at relatively high efficiency.
Schmitt trigger multivibrator circuit, capable of astable, monostable or bistable operation, incorporates an input circuit in conjunction with a Schmitt trigger circuit. The circuits form two output signal levels, are useful in switching circuit applications, initiates oscillations, and forms highly unsymmetrical wave forms.
It is argued that the moonquakes recorded by sensors at the Apollo 12 landing site between December 1969 and December 1970, and which according to Latham et al. (1971) are believed to be triggered by the anomalistic lunar tide, could be triggered just as well by the latitudinal (or declination) tidal wave. Considerations are set forth which indicate that a combined latitudinal-anomalistic tidal mechanism is supported by Latham's data.
A trigger circuit employing two unijunction transistor oscillators, whose frequency is varied by changing the base-to-base voltage, provides variable electrical control of the frequency.
Schematics of solid state sequential camera trigger circuits
Design and performance of inverse gas triggered pinch discharge switch
Inverse gas-triggered pinch discharge switch with gap length and annular width determinations
SiC/Si diode pair provides automatic range change to extend the operating range of a logarithmic amplifier-conversion circuit and assures stability at or near the range switch-over point. the diode provides hysteresis for a trigger circuit that actuates a relay at the desired range extension point.
Multiple chip custom block, MIC construction is used to fabricate an ultracompact, low-power astable multivibrator. The design provides a multivibrator that free runs, eliminating lockup, is triggerable, pulling into synchronization with an external signal source, and permits design flexibility for controlling the frequency variations with temperature.
Latch and trip mechanisms for triggering large loads with small loads through interrupted motion
Ambient ionospheric electron density studied as triggering mechanism of auroras
Parameters affecting firing time of simultaneously triggered trigatron spark gap switches
Design of multistage triggers for digital computers and sampled-data control systems
Gas dynamic processes insufficiency for triggering transition to detonation obtained from laser schlieren records of nonsteady flow field ahead of accelerating turbulent flame
Digital period detector oscilloscope trigger for multitrace display