Solid state relay
US8084894B2 · kind B2 · utility
17Cited by
17References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 4, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Dec 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2019/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A solid state relay includes: an oscillator circuit responsive to a control signal for generating an a.c. signal; an isolation transformer having a primary winding which forms a part of the tank circuit of the oscillator circuit and a secondary winding; a rectifier responsive to the a.c. signal from the oscillator circuit for providing a d.c. drive signal; and a switch circuit responsive to the drive signal to open and close the relay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.