Designing Solar Lanterns

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Solar powered lanterns are already well known.

There are some very low drop semi's available from ZETEX, who have application notes to build fluorescent lanterns based around their ZTX652 BJT.

To minimise the final cost you'll probably be looking to piggyback on an existing popular item. For example, manufacturers of electric hand-tools sometimes have large quantities of cheap, but high capacity NiCd cells to offload.

Good luck

My friend. My Advise: 1 st buy solar lantern from manufacturer, negotiate with them. evaluate the product design, cost, economics etc etc and than go for manufacturing.

I would include mirrors in the design to get the most light from the lantern as possible.

If you are in India please mail Mr.Santosh Janardhan, santosh(at)labteklimited(dot)com with your idea. He is a like minded person with facilities. He also has sources for low cost components.

Please write the email id in the standard email format abc@xyz.com

Hi, Guy, It bases on your budget. Please send your enquiry by email with budget per unit, and estimated quantity of unit per order, and per annum to Besty@IntlSales.org

Yours faithfully,

Henry

Have a look at the Stanford University Design school lantern product/program of a couple of years ago. It has some lessons on design by non local values. Then look at the solar recharging 'kiosk' program in India and what it took to kick it off. Then consider how what you might invest is best invested to serve actual educational needs. Make the right choices and you may well do a lot of good.