Progress in high pressure sodium lamp technology. J. IEE Proceedings-A.

Geens, R. Wyner, E.

1993

228
SEPARATA

This paper review the most important technological advances in hihg pressure sodium lamp technology in the past decade. The basic effect of increasing the nexon starting gas pressure on the electrical and photometric lamp characteristics are discused. The implications for a practical high xenon pressure product are also briefly reviewed. The basis of colour improved lamps, both the AC and the pulsed current versions, is splainned. It is then demostrated how the difference colour improved commercial lamp are derived. The basic difference between saturated and unsaturated HPS lamps is explained by considering different dosing schemes, then the advantages of an unsatured HPS lamp over a satured one is demostrated and finally, a brief description of the effects of omitting mercury from the HPS discharge vessel is given and it is suggested how a practical mercury-free lamp with good efficacy and life could be derived..

GENERAL; LAMPARAS DE SODIO; TECNOLOGIA ENERGETICA; ASPECTOS TECNICOS; PRUEBAS; SODIO ALTA PRESION; ILUMINACION;