Halogen Lamp
Advantage and Application
Advantages:
💢Higher operating temp. &hence better Luminous efficacy (22- 33 Lu/W)
💢 Longer life (2000 working hours)
💢Reduced blackening of lamp
💢Reduced dimension
💢 Better colour rendering
Application:
💥Outdoor Illumination of building, playground, gardens, airport runways etc.
💥Indoor illumination of public halls, factories, sports halls, TV studio etc.
Gaseous Discharge Lamps
Sodium Vapour Lamp
A sodium vapour lamp is a particular kind of high-intensity discharge (HID) lamp that emits illumination using sodium vapour.
The lamp works by passing an electric current through a tube containing sodium and other gases, which causes the sodium atoms to become excited and emit yellow light.
Contents:
Working Process of High Pressure Sodium Vapour Lamp