Electric circuit control system using logic device
US4090107A · kind A · utility
27Cited by
4References
18Claims
0Family size
Inventor
Key dates
| Filing date | Dec 8, 1976 |
| Grant date | May 16, 1978 |
| Priority date | — |
| Expiry date | Dec 8, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S323/902
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit is disclosed which is suitable for controlling lighting in a building from a multiple number of points. AC current to light bulbs is controlled by a triac which in turn is controlled by the output of an optical coupler which is controlled by the output of a logic device. The output of said logic device is connected to control the input to the triac. Switches connecting to the input of the logic device each can independently determine energization or deenergization of the light bulbs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.