Gazezufuhrleitung in Spuleneinheit fuer eine Fernsehaufnahmeroehre

摘要

In order to suppress interference signals caused by the line deflection field across the capacitive interruption between the mesh electrode and the target, the mesh connection loop of a television camera having a separated mesh electrode is constructed such that effectively it encloses substantially no magnetic flux of the line deflection field. The return field which is usually concentrated in the wall of a ferromagnetic screening bush mounted about the camera tube is taken into account in this respect. In a preferred embodiment, the mesh connection wire in the camera tube has the shape of a helix having a pitch which corresponds to the axial field length of the line deflection field.