Patent · US Expired

Device for a unipolarly operated electrical circuit component

US5047911A · kind A · utility

25Cited by

7References

16Claims

0Family size

Assignee

Leybold GmBH · DE

Inventors

Wolfgang Sperzel · Gelnhausen, DE
Horst Landwehr · Hanau, DE
Johann Sturmer · Alzenau, DE
Friedrich-Werner Thomas · Schliersee, DE
Guido Hubertus · Hochheim, DE

Key dates

Filing date	Jul 22, 1988
Grant date	Sep 10, 1991
Priority date	—
Expiry date	Jul 22, 2008

Classification

Technology area (CPC H)Electricity
CPC primaryH02M3/335
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a device (20) for a unipolarly operated component (9) capable of storing energy. This device (20) can be applied, for example, in an asymmetrical half bridge circuit (1). It compensates the dc magnetic flux which originates due to the unipolar operation and, hence permits making relatively small in size the component (9) capable of storing energy. Using a current converter (25, 32) with suitable winding ratio as an automatic and load-dependent compensation device, moreover, permits very flexible adaptation to load changes. Such adaptation is, in particular, required when very high pulsating current occurs on the primary side with simultaneous secondary no-load operation.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.