Abstract: The invention relates to a system for pulse magnetizing high-precision magnetic scales. The system comprises a shaped current conductor (1) and a pulse current source (2) that is composed of a capacitor bank (3), a transfer switch (4) and a control unit (5). The 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 an H bridge with four switches (7) that contain equal numbers of MOS transistors connected in parallel. The short pulse times that are achieved using the 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.

Abstract: An arrangement for a magnetoresistive sensor chip has two Wheatstone brid to determine the sine and cosine of the angle formed between a chip edge and the direction of the magnetic field. All resistances of the bridges consist of a plurality of magnetoresistive laminated elements (2) with current connections made of highly conductive thin films with parallel edges. When the resistances of a bridge are directly electrically interconnected, these edges form angles (5) of 90.degree. each. The parallel edges of the corresponding resistances of the sine and cosine bridges are mutually offset by 45.degree.. The magnetoresistive laminated elements (2) are distributed on the chip surface to reduce angle measurement errors to a minimum. Also disclosed are arrangements that allow the sensor chips to be used for measuring angles and positions.