Patents Assigned to Patent Treuhand Gesellschaft fur elecktrische Gluhlampen mbH
  • Circuit apparatus and method for operating a lamp
    Patent number: 7053561
    Abstract: The current through the components of a half-bridge of an electronic ballast is intended to be limited during the starting phase. For this purpose, the gate of a half-bridge transistor (T2) is driven by a current limiting circuit (D1, D2, D3, T3, C3) in such a way that the current through the transistors (T1, T2) is limited during the starting phase, whereas it remains unlimited during the glow phase and burning phase of the lamp (LA).
    Type: Grant
    Filed: July 23, 2003
    Date of Patent: May 30, 2006
    Assignee: Patent Treuhand Gesellschaft fur elecktrische Gluhlampen mbH
    Inventors: Siegfried Mayer, Arwed Storm
  • Lamp base for a high-pressure discharge lamp and high-pressure discharge lamp
    Patent number: 7025629
    Abstract: The invention relates to a lamp base for a high-pressure discharge lamp and to a high-pressure discharge lamp having a mounting plate for electronic modules and having a plug socket for connecting a voltage source to the lamp base, the plug socket being in the form of a surface-mounted module on the mounting plate.
    Type: Grant
    Filed: August 17, 2004
    Date of Patent: April 11, 2006
    Assignee: Patent-Treuhand-Gesellschaft für elecktrische Gluhlampen mbH
    Inventors: Gerhard Behr, Matthias Burkhardt, Peter Helbig, Arnulf Rupp
  • Incandescent lamp having an activating effect
    Publication number: 20050127836
    Abstract: The invention relates to an incandescent lamp having an increased activating effect, in which a greater emission in absolute terms is achieved in the spectral range having a circadian effect owing to spectral filtering, on the one hand, and measures for compensating for the luminous flux losses, on the other hand, given a lamp output power and luminous efficiency which overall remain substantially the same. This spectral range has physiological effects on the human body.
    Type: Application
    Filed: December 13, 2004
    Publication date: June 16, 2005
    Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELECKTRISCHE GLUHLAMPEN MBH
    Inventors: Carsten Plumeyer, Yannick Scheyer
  • Operating circuit for a dielectrically impeded discharge lamp having an overvoltage protection circuit
    Publication number: 20050088116
    Abstract: The invention relates to a method and a circuit for starting or operating discharge lamps which are designed for dielectrically impeded discharges. In this case, it is established in advance, with the aid of an overvoltage protection circuit and test power pulses, whether the discharge lamp is connected.
    Type: Application
    Filed: October 14, 2004
    Publication date: April 28, 2005
    Applicant: PATENT-TREUHAND-GESELLSCHAFT FUR ELECKTRISCHE GLUHLAMPEN MBH
    Inventor: Oskar Schallmoser