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Traveling-Wave Tube Helix Impedance
Proceedings of the IRE, 1953The impedance parameter of a circular helix, from which the gain of a helix-type traveling wave amplifier is computed, is investigated for a "Tape-Helix" model. Results obtained in this paper indicate that the impedance has a smaller value than for the "Sheath-Helix" model, and is considerably reduced at larger values of ka, the ratio of the helix ...
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Frequency range of the acoustic impedance tube [PDF]
Many engineering applications call for the acoustic properties of materials to be known for the frequency range of 125 to 4000 Hz. According to current Australian and international standards, the present impedance tube apparatus in the Department of Mechanical Engineering laboratory at the University of Queensland is only able to produce results that ...
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Characterization of Condenser Tubes Coatings by Electrochemical Impedance
Corrosion Reviews, 1990Colombo A., Rocchini G., SPINELLI, Paolo
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A Vacuum Tube Impedance Bridge
Journal of the Optical Society of America, 1929openaire +1 more source
Time-Domain Numerical Simulation of a Flow-Impedance Tube
Journal of Computational Physics, 1998Yusuf ÖZYÖRÜK +2 more
exaly
Effect of impedance on a compressor driving pulse tube refrigerator
Applied Thermal Engineering, 2017Shaoshuai Liu, Z H Jiang
exaly
Static flow resistivity measurements based on the ISO 10534.2 standard impedance tube
Building and Environment, 2015Jiancheng Tao, Xiaojun Qiu, Jie Pan
exaly