Switch mode power supply with reduced noise
US4779184A · kind A · utility
15Cited by
16References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1987 |
| Grant date | Oct 18, 1988 |
| Priority date | — |
| Expiry date | Oct 14, 2007 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J1/102
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switch mode power supply is disclosed having a pair of switch mode power supply sections which are maintained precisely 180.degree. out of phase and precisely matched in duty cycle. The phase locking of the switch mode power supply sections produces an output voltage which is substantially free of harmonics which requires greatly reduced filtering. A phase lock loop is provided for controlling the phase and duty cycle between the first and second sections of the switch mode power supply.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.