Circuit that reduces the numbers of components needed to transmit data from intrinsically safe to non-intrinsically safe circuits using opto-couplers
US6404609B1 · kind B1 · utility
12Cited by
7References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 31, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/802
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The described circuit is an intrinsically safe circuit configured for supplying intrinsically safe power from a power supply in a hazardous environment. The intrinsically safe circuit reduces a number of node connections by reducing a number of components. The intrinsically safe circuit comprises an opto-coupler circuit configured for receiving a control signal, a resistor, and a single voltage limiting circuit. The reduction in components and node connections results in a reduction of board costs and area, while maintaining a desired level of protection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.