Application of Negative Feedback to Reduction of Glow Discharge Noise |
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0A2 discharge tube 50 m sec/cm amps/cm analog circuit APPLICATION OF NEGATIVE C. W. Bray CALCULATION OF NOISE cathode-fall region Circuit for Current-Current Current Waveform current-to-current feedback Diagram of Feedback discharge current noise experimental F. M. Shofner feedback amplifier Feedback Stabilizer Feedback System FEEDBACK TO REDUCTION fluctuations frequencies of Scope GLOW DISCHARGE NOISE Hz Fig impedance versus frequency Km 6m laser discharge tube laser tube light noise locus plot low frequency NASA negative feedback noise reduction noise with feedback Noise Without Feedback ohms output radiation intensity pentode plasma conditions Plot for Feedback pole due reduce the discharge REDUCTION AND STABILITY REDUCTION OF GLOW researchers have studied root-locus plot Schematic Diagram Scope Amplifier sec/cm Cutoff frequencies Small-signal Equivalent Circuit SPACE INSTITUTE Tullahoma stability analysis T. B. Carlson TENNESSEE SPACE INSTITUTE transfer function UNIVERSITY OF TENNESSEE Unstable System voltage regulator tube VR tube Waveform for Unstable