| Hydrogen will increase in importance in the future, in order to reduce our dependence on fossil fuels. Hydrogen can be sustainably generated...
All items tagged with light and Solar Energy (10)
| This circuit exploits the unique ability of the LTC3129 and LTC3129-1 to start up and operate from an input power source as “weak” as 7.5 µW...
| High brightness LEDs and special optics allow street lamps to be spaced up to 50 meters apart -- much wider than is possible with other solu...
| This night light has two power sources: a solar cell with a peak output voltage of about 6 V, and a Li-Ion cell with a voltage between 3.7 V...
| I'm leaving on a little camping trip to France tomorrow so this one seems appropriate: A transforming flashlight that splits open and turns...
| Forget the Boieng Phantom Eye, the Zephyr takes unmanned solar aviation to the next level. The Zephyr is a super-lightweight, carbon-fiber c...
| This project is intended for use in conjunction with existing or still-to-be-built garden lighting systems. The circuit cannot operate alone...
| Solar powered lights are nowadays available at incredibly cheap prices, so we won't advise you to build these yourselves. But you may b...
| Completely ‘self-supporting’ garden lamps using solar cells as their energy source are gradually becoming more and more common. How do they...
| When a battery is charged by a solar panel during the day, it may discharge via that panel after sunset. This may, of course, be prevente...