High power solid state relay with input presence and polarity indication
US5338991A · kind A · utility
24Cited by
9References
3Claims
0Family size
Inventor
Key dates
| Filing date | Dec 28, 1992 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Dec 28, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H11/002
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state relay having an input circuit and a triac Darlington circuit coupled by a phototriac circuit. The input circuit having a bipolar indicator lamp for identifying the polarity and presence of an input voltage. The phototriac circuit and the triac Darlington circuit each having bipolar indicator lamps to indicate ON/OFF operation of respective triacs therein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.