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- Article name
- Determination of the cathode and anode voltage drop in high power low pressure amalgam lamps
- Authors
- Kudryavtsev N. N., , , MIPT, 9 Institute al., Dolroprudny, Moscow region, 141700, Russia
Vasilyak L. M., , vasiyak@ihed.ras.ru, Joint Institute for High Temperatures, Russian Academy of Sciences, 13/2 Izhorskaya str., Moscow, 127412, Russia
Vasiliev A. I., , vasiliev@npo.lit.ru, Joint Stock Company NPO LIT, 44, Krasnobogatyrckaya str., Moscow, 107076, Russia
Kostyuchenco S. V., , vasiliev@npo.lit.ru, Joint Stock Company NPO LIT, 44, Krasnobogatyrckaya str., Moscow, 107076, Russia
Sokolov D. V., , vasiliev@npo.lit.ru, Joint Stock Company NPO LIT, 44, Krasnobogatyrckaya str., Moscow, 107076, Russia
Startsev A. J., , vasiliev@npo.lit.ru, Joint Stock Company NPO LIT, 44, Krasnobogatyrckaya str., Moscow, 107076, Russia
- Keywords
- arc discharge / UV radiation / amalgam lamp / water disinfection
- Year
- 2010 Issue 3 Pages 18 - 23
- Code EDN
- Code DOI
- Abstract
- Cathode and anode drop of powerful low pressure amalgam lamps were measured. The lamp discharge current is 3.2 A, discharge current frequency is 43 kHz, linear electric power is 2.4 W/cm. The method of determination of a cathode drop is based on the change of lamp operating voltage at variation of the electrode heating current at constant discharge current. The total (cathode plus anode) drop of voltage was measured by other, independent way. The maximum cathode fall is 10.8 V, the anode fall corresponding to the maximal cathode fall is 2.4 V. It is shown that in powerful low pressure amalgam lamps the anode fall gives considerable, and in certain cases the basic contribution to heating of electrodes, therefore the anode fall cannot be neglected at design an electrode and ballast of amalgam lamps with operating discharge current frequency of tens kHz.
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