solar lantern
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Active In SP

Posts: 3
Joined: Apr 2010
24-04-2010, 03:41 PM

hi sir,
i'm an NGO i want to know the project and implimentation detials for solar lantern.I request you to send the required details for me,it would be so helpful for me.I'm also an engineering student in ECE.So please kindly provide me the details for solar lantern.[/i]
Active In SP

Posts: 291
Joined: Apr 2010
26-04-2010, 02:00 PM

LED emits light when an electric
current passes through it. A Solar lantern consists of a
lamp, battery and electronics, all placed in a suitable housing. The battery is charged by electricity
generated through the PV module.

The light source is White Light Emitting Diode (W-LED), dispersed, soothing to eyes. The battery used in this is Lead acid Sealed maintenance free or Ni MH or Lithium Ion. The electronics provides an efficiency Min 80% total efficiency . It can provide light for 4 hours a day .

The PV modules based on crystalline silicon solar cells or thin films may be used.

Adequate protection is to be incorporated under no load conditions,
e.g. when the lamps are removed and the system is switched ON. Fuses to protect against short circuit conditions should be provided. A blocking diode should be provided to prevent reverse
flow of current through the PV module.

The indicator system including a green light to indicate
charging in progress and a red LED to indicate deep discharge condition of the battery.

for more details:

.pdf   solar_led_lantern.pdf (Size: 27.46 KB / Downloads: 57)
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