AC power switching device with non-volatile memory unit
US5003192A · kind A · utility
42Cited by
4References
21Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 1989 |
| Grant date | Mar 26, 1991 |
| Priority date | — |
| Expiry date | Jun 23, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A solid state semiconductor power switch for controlling the application of AC power to a load wherein the power switch employs momentary ON/OFF switches for activating the power switch, and wherein additional circuit means is provided to preserve the ON/OFF condition or state of the power switch during a power-down situation such that upon restoration of the AC power the power switch can be caused to assume the same ON or OFF state it was in just prior to the power-down situation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.