Power supply circuit
US4686615A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1986 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Aug 13, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/3376
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direct-current power supply circuit includes a series-connected switch (TR1) and an inducator (L) connected together with a flywheel diode (D) across an input voltage supply (V.sub.s). A transformer (TX) has a primary winding connected to the inductor (L) and the diode (D) by way of a bridge-connected network of switching devices (TR2-TR5). A reservoir capacitor (c) is connected to a secondary winding of the transformer (TX) by way of a full-wave rectifier (DB), and a load (LD) may be connected to the reservoir capacitor (c). Control means (CM) are provided to control the operation of the series-connected switch (TR1) and the network of switching devices (TR2-TR5) so that each cycle of operation transfers an equal amount of charge to the reservoir capacitor (c) regardless of variations in the input voltage (V.sub.s) or load conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.