Anordnung zum Schreiben magnetischer Maßstäbe

摘要

The invention relates to a system for pulse magnetizing high-precision magnetic scales. Said system consists of a shaped current conductor (1) and a pulse current source (2) which is composed of a capacitor bank (3), a transfer switch (4) and a control unit (5). This compact set-up of the system is the prerequisite for a power circuit that has such a low resistance that the required high pulse currents are obtained at supply voltages of below 60 V. The transfer switch is a H bridge with four switches (7) that contain equal numbers of MOS transistors connected in parallel. The short pulse times that are achieved using said MOS transistors allow the use of shaped current conductors with which magnetized areas can be produced with a very high precision. The inventive system provides a means for saving components, electric power and time by a factor of up to 100.