Voltage regulating apparatus supplying a drive voltage to a plurality of loads
US7315095B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2005 |
| Grant date | Jan 1, 2008 |
| Priority date | — |
| Expiry date | Dec 17, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/46
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In a soft start period after power-on, a voltage regulating apparatus checks LED by LED to determine whether the LED is mounted on a position to receive a drive voltage. After the soft start period, the voltage regulating apparatus monitors the driving status of each of the plurality of LEDs. When it is determined as a result of monitoring that the driving status of at least one of the LEDs is improper, the voltage regulating apparatus increases the drive voltage. In this process, the monitoring on an LED determined to be unmounted as a result of a mount checking process is invalidated. With this, it is ensured that a result of monitoring on the LED unmounted is prevented from affecting the increasing of the drive voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.