要約

The considered problem is topical because of the necessity to reduce the POWER consumption of the set-up intended for ignition and long-term sustaining of the torch discharge (TD) burning in case of its industrial application, as well as due to the complexity of TD investigations in a wide frequency band. The aim is to develop a technique for measuring the TD resistance, which is its decisive characteristic. The relevant techniques suggested in scientific literature are quite complex and expensive. In this paper, we present some formulae derived to determine the TD resistance in the power range up to 1 kW by measuring the source's minimum voltages required for sustaining TD burning at two frequencies. The frequency dependencies for these voltages have been obtained. Simple estimation expressions for TD parameters have been derived; their accuracy has been compared under various conditions. The limits of the frequency band in which the obtained expressions remain true have been found. The suggested method allows obtain the desired result at a lower cost and with a simpler set-up design. The performed work contributes to a more effective use of material and technical resources.