Patent · US Expired

Operation circuit in particular for discharge lamps using discrete time definition values to control operation state switching

US6107758A · kind A · utility

3Cited by

5References

8Claims

0Family size

Assignees

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE
STMicroelectronics SA

Inventors

Klaus Fischer · Augsburg, DE
Roberto Gariboldi · Pieve Emanuele, IT
Giuseppe Cantone · Bareggio, IT

Key dates

Filing date	Sep 23, 1999
Grant date	Aug 22, 2000
Priority date	—
Expiry date	Sep 23, 2019

Classification

Technology area (CPC H)Electricity
CPC primaryH05B47/185
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit is described with which an operation circuit for a discharge lamp can be switched between operation states with different lamp currents by hort interruptions of the power supply. Long interruptions than a certain time threshold result in basic state operation.

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