Portable Solar Generator. Start Up Project 16

7AWhat will do if you are in a place where AC is not available to power your gadgets ? You can carry this Portable Solar Generator to a Picnic spot where AC is not available. It lights a CFL to provide sufficient light and AC for charging Mobile Phone, Tablet etc and can even play a small CD player. Alternately you can use the unit in home during Power Outage days. It converts the 12 V DC from the battery to 220V AC to light the CFL. It has a bulb holder to fix the CFL and an AC outlet to tap AC for other purposes. It uses a simple 20 Watts CFL Driver board to converts DC to AC. The battery can be charged using a 12 V Solar panel or 12V DC Adapter. The battery used in this unit is 12V 3 Ah (3 Ampere Hour) rechargeable Lead acid battery which can power the CFL many hours.
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Solar Power Outlet. Start Up Project 4

17AWhy wasting electricity for charging USB devices including Mobile phone? Sun is there to give power for this. Install a Solar Power Outlet in your home to harvest solar power for charging all USB devices in day time. Its cost is only Rs.500 and you get unlimited day power for more than 25 years to charge all USB devices. The expensive part of the project is Solar Panel. A 12 Volt 5 watts Solar panel costs around Rs.400 because the current rate is around Rs.80 per watt. The remaining components costs only Rs.100. So by spending Rs.500 initially, you can charge all your USB devices at the expense of only 6 Paisa per day . The calculation is for 25 years (50,000 Paisa / 9000 days = 5.5 Paisa). So hurry up to make this project.
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Simple Solar Charger. Design Trick 13

You can use this Solar charger to charge 12 volt Lead Acid or Tubular battery. It is voltage controlled and charge the battery when the output from Solar panel exceeds 15 volts in bright sunlight. The open circuit voltage of a 12 volt solar panel is around 20 volts in full light and the 12 volt battery requires around 14-15 volts for charging. The circuit also prevents the discharge of battery into the solar panel when the sunlight is low.
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Fact File 1- How does Solar cell works?

Solar cell is a semiconductor device used for harvesting Solar energy to charge battery. It generates current through the excitation of its semiconductor material by the Photon energy of the sunlight.

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