LED light strip with brightness/current draw control circuitry
US5661374A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1996 |
| Grant date | Aug 26, 1997 |
| Priority date | — |
| Expiry date | Aug 15, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current consumption control system for controlling the current draw of an electric power-consuming device, e.g., a modular strip lighting unit for a lighting system including at least one said unit, in which the strip lighting unit includes at least one light source element operatively coupled to a lighting circuit. The lighting circuit may illustratively comprise at least one pair of primary conduction lines connectable to a voltage source, and coupled in electrical circuit relationship with a current regulating circuit. The current regulating circuit includes an operational amplifier which is coupled with the primary conduction lines to generate a reference voltage, and which is coupled with positve and negative current input lines, with at least one power-consuming device coupled to the current output of the operational amplifier, and to the negative current input line. In such arrangement, the operational amplifier compares (i) the reference voltage to (ii) the voltage differential between the positive current input and the negative current input of the operational amplifier, and responsively adjusts current at the current output of the operational amplifier to the power-cons…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.