9,973 research outputs found
Frequency modulation demodulator threshold extension device
Threshold extension device for improving operating performance of frequency modulatioin demodulators by eliminating click-type noise impulse
Electronic device increases threshold sensitivity and removes noise from FM communications receiver
Threshold extension device connected between demodulator output and filter output minimizes clicking noise. Device consists of click-eliminating signal transfer channel with follow-and-hold circuit and detector for sensing click impulses. Final output consists of signal plus low level noise without high amplitude impulses
A resonance-tube igniter for hydrogen-oxygen rocket engines
Resonance-tube igniter for hydrogen-oxygen rocket engine
Resonance tube igniter
Reasonance induced in stoichiometric mixtures of gaseous hydrogen-oxygen produces temperatures /over 1100 deg F/ high enough to cause ignition. Resonance tube phenomenon occurs when high pressure gas is forced through sonic or supersonic nozzle into short cavity. Various applications for the phenomenon are discussed
The relation of calcium and phosphorus intake and digestion and the effects of vitamin D feeding on the utilization of calcium and phosphorus by lactating dairy cows
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