Dual solid state relay
US5079457A · kind A · utility
Inventor
Key dates
| Filing date | Dec 21, 1990 |
| Grant date | Jan 7, 1992 |
| Priority date | — |
| Expiry date | Dec 21, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/79
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A dual solid state relay comprised of an input circuit, an optical coupler, a reference voltage circuit, a switch circuit, an SCR saturation circuit, a full wave bridge rectifier, a TRIAC driver circuit, an SCR driver circuit, a TRIAC slave circuit, an SCR slave circuit, a snobber circuit, and an output port. The TRIAC slave circuit and the SCR slave circuit are driven by the TRIAC driver circuit and the SCR driver circuit, respectively. The relay circuit is designed to employ additional TRIACs and SCRs in the event that the switching of very high currents and voltages becomes necessary. A further feature of the present invention is a SPDT switch which allows the user the opportunity of choosing which part of the relay circuit is utilized (TRIAC or SCR).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.