TWO-FREQUENCY APPROACH FOR DETERMINATION OF A TORCH DISCHARGE RESISTANCE WITHIN M. S. NEIMAN EQUIVALENT SCHEME WITH ADDED EQUIVALENT INDUCTANCE OF THE DISCHARGE
heading:
| Puzanov, АО |
Organization: O. Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine |
| https://doi.org/10.15407/rej2018.01.061 |
| Language: Russian |
Abstract: The relevance of the study presented is caused by the possibility to use a torch discharge (TD) in many useful applications along with a substantial lag in its practice-oriented theoretical studies. In this paper, the proposed by the author original method for measuring the resistance of the TD (Rd) taking into account the discharge inductance L is considered. The formula for calculation of Rd from the data measured at two frequencies is proposed. The data measured are the values of the function a, namely the ratio of voltages at which the electrical and geometrical characteristics of the torch discharge remain unchanged. In particular, an inequality for estimation of definition area of a, when the formula for Rd is used, is found. It is established that the frequency dependency of a has a minimum at the resonant frequency of the discharge circuit wr. At L ® 0 the minimum becomes an asymptote for a similar dependency of a at L º 0. It is shown that the minimum of a is always located above the indicated asymptote at the ordinate axis if the influence of L has to be accounted. It is concluded that the measured value of a has to correlate with the accuracy of the measuring equipment including devices for controlling the constancy of geometrical parameters of the torch discharge excited at two frequencies. Therefore, the measured value of a has to be as less as possible. It can be achieved if the frequencies of excitation are significantly different. The approach proposed results in more effective using of industrial resources. |
| Keywords: Neiman’s model, torch discharge, torch discharge inductance, torch discharge resistance |
Manuscript submitted 27.12.2017
PACS 52.75.Hn, 52.80.Pi, 51.50.+v
Radiofiz. elektron. 2018, 23(1): 61-70
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