Staged selection type Christmas light controller circuit
US5345147A · kind A · utility
Inventor
Key dates
| Filing date | Feb 17, 1993 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Feb 17, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A staged selection type Christmas light controller circuit is provided. The light controller includes a rectifier, a current-limiter, a voltage regulator, a separator, a power stage generator, a selector switch, an oscillator, an integrated circuit controller, a driver, and a plurality of Christmas lights. The rectifier, the current-limiter, and the voltage regulator are connected in series with a power plug for providing DC voltage to the power input pin of the integrated circuit controller. A separator circuit is connected with the output end of the rectifier or the current-limiter and is coupled to the selection trigger pin of the integrated circuit controller through the power stage generator and the selector switch. An oscillator is coupled to the integrated circuit controller and the Christmas light sets are coupled to the controller through a driver. The power stage generator produce a signal for triggering the sequencing of the controller circuit responsive to cycling of the power on and off within a predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.