Power supply
US4219872A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Dec 11, 1978 |
| Grant date | Aug 26, 1980 |
| Priority date | — |
| Expiry date | Dec 11, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/2173
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear DC power supply provides high efficiency with substantially lower total capacitance than prior art linear DC power supplies. The power supply includes first and second input terminals, first and second output terminals, a center tap transformer, first and second capacitors, first and second charging circuits, and first and second discharging circuits. The center tap transformer has a primary connected to the first and second input terminals and has a secondary with first and second phase terminals and a center tap terminal which is connected to the second output terminal. The first charging circuit is connected to the secondary and the first capacitor to fully charge the first capacitor during a first portion of each cycle. Similarly, the second charging circuit is connected to the secondary for fully charging the second capacitor during a second portion of each cycle. The first discharging circuit connects the first capacitor to the first output terminal and permits the first capacitor to fully discharge during a third portion of each cycle. The second discharging circuit connects the second capacitor to the first output terminal and permits the second capacitor to fully …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.