Solar-powered lighting system
US8519639B2 · kind B2 · utility
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1Claims
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Inventors
Key dates
| Filing date | Jun 30, 2011 |
| Grant date | Aug 27, 2013 |
| Priority date | — |
| Expiry date | Jul 8, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved, solar-controlled light device with a circuit-control having a phototransistor, a variable resistor, and a first transistor connected to a storage unit, to a solar cell, and to a current-control. The variable resistor can be set to permit the device to turn on at pre-set ambient light levels. The current-control has a transformer, a second resistor, and a second transistor, connected at one end of the current-control to a light and at another end connected to the circuit-control, wherein the current-control senses the amount of power and boosts the power as needed to a sufficient level to power the lights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.