Power supply with switching means responsive to line voltage
US4843301A · kind A · utility
20Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 6, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Oct 6, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply circuit capable of operation with 115 V.A.C. (low range) or 230 V.A.C. (high range) line voltages, having a transformer with a primary winding arrangement which can be switched by a relay to accomodate either voltage range. A line voltage sensing circuit is coupled to a low voltage tap on the primary winding to sense the line voltage. When the line voltage is in the high range the voltage sensing circuit leaves the relay de-energized; and the sensing circuit energizes the relay to switch the primary winding to the appropriate configuration when the line voltage is in the low range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.