Output module for industrial control with sink and source capability and low heat dissipation
US9214935B2 · kind B2 · utility
3Cited by
5References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2012 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Aug 31, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/691
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An I/O circuit for use with an industrial controller provides a photovoltaic optical isolator communicating between a controller and a field-side of the I/O circuit, the photovoltaic optical isolator eliminating the need for high wattage power dropping circuits for powering the field-side of the I/O circuit from high-voltage field signals. The field effect transistor type transistors permit use of the low-power photovoltaic optical isolator while allowing flexible connections to various field circuit types.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.