Patent ID: 7696699

Claim:
A lamp base for a high-pressure discharge lamp, the lamp base having an ignition transformer arranged in an interior of the lamp base for igniting gas discharge in the high-pressure discharge lamp, wherein the ignition transformer comprises a first core component and at least one second core component, the first core component having a cylindrical section, on which windings of the ignition transformer are arranged; wherein the first and second core components each comprise a ferromagnetic or ferrimagnetic material and are separated by at least one gap, the first and second core components being shaped such that the at least one second core component bridges the cylindrical section of the first core component and produces a magnetic return path from a first end of the first core component to a second end of the first core component; and wherein an adhesive material having a lower relative permeability than that of the ferromagnetic or ferrimagnetic material of the first and second core components is arranged in the at least one gap for connecting the first and second core components.