11-12-2012, 04:03 PM
A SEMINAR PRESENTATION ON FLUORESCENT LAMP
A SEMINAR PRESENTATION.pptx (Size: 2.58 MB / Downloads: 60)
ELIN ELECTRONICS
Elin established in 1990.
One of the India’s leading Engineering manufacturing company.
India’s largest universal Motor manufacture.
Tool manufacturing facility.
Turn over of more then 4 billion Indian rupees.
Bulb
Bulb is an electric lamp, In which mixer of Nitrogen or Argon is filled and produces light when its filament (Tungsten) is heated to high temperature by an electric current.
Types Of Fluorescent Lamp
There are Two types of Fluorescent Lamps-
Integrated Fluorescent Lamp-
It is the combination of Tube and Ballast in a single unit. If any fault occurs then whole unit is changed.
Electronic Ballast Circuit Diagram
It includes-
AC line input voltage
EMI Filter- For block circuit-generated switching noise
Rectifier and smoothing capacitor, a control IC and half-bridge inverter for AC to DC conversion
Half Bridge circuit for switching
Resonant Tank circuit to ignite and run the lamp.
An Additional circuit block required for dimming, which is a feedback circuit for controlling the lamp current.