Voltage regulator
US4213082A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1978 |
| Grant date | Jul 15, 1980 |
| Priority date | — |
| Expiry date | Oct 27, 1998 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/3378
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage regulator for converting an unregulated input voltage into a regulated D.C. voltage. The voltage regulator includes a driver transformer which periodically receives energizing current from a voltage source through a transistor switch. A switching regulator controller regulates the conduction time of the transistor so as to control the amount of energizing current supplied to the driver transformer. The driver transformer secondary windings drive the base of output transistors which, when conducting, connect the primary windings of an output transformer to the voltage supply. A capacitor is connected in parallel with the primary winding of the driver transformer so as to short circuit the primary winding of the drive transformer when the driver transistor is turned off. The current flow in the secondary of the driver transistor causes removal of the stored base charge from the output transistors which decreases the turn off time of the output transistors. The primary windings of the output transformer are connected in series with first and second capacitors connected between the common junction of the primary windings and the voltage supply to effectively create a virtual …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.