Solar powered street-lamp control circuit
US7561130B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B20/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control circuit for regulating current supplied from a power source to at least one load. The control circuit has a current mirror circuit electrically coupled between the power source and the at least one load, and being capable of regulating current supplied from the power source to the at least one load at different levels; a real-time clock (RTC) circuit adapted for recording real time; and a micro control unit (MCU) electrically coupled between the RTC circuit and the current mirror circuit, and configured such that when the real time changes from a first time period to a second time period, the MCU generates control signals to trigger the current mirror circuit to regulate current supplied from the power source to the at least one load from a first level corresponding to the first time period to a second level corresponding to the second time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.