Switching power supply
US5544032A · kind A · utility
5Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 14, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Apr 14, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/3376
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a switching power supply which can realize the saving of space and low-cost manufacturing. On-off control of FET (3), intermittently applies D.C. input voltage V-IN to the primary windings (1A, 2A), of transformers (1,2). Current detection circuit (15) detects the voltage drop caused by the resistance of the secondary windings (1B,2B) to produce output current detection signals in proportion to the load current (1D). The resistance of the secondary windings (1B,2B) of transformers (1,2) can be employed as a current detector, whereby saving of space and low-cost manufacturing of power supplies can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.