Integrated current sensor for current limiting and measuring - has components sensitive to magnetic field and excitation paths formed by film technique on substrate

摘要

The current sensor uses a number of magnetic field sensors and associated emergising line conductors insulated from one another on a common substrate. The geometric arrangement is in a U, L or O configurationand usesa thin-film,thick-film or hybrid technique so that each magnetic field sensor is subjected to a fluxdensity proportional to the energising current. Each magnetic field sensor pref comproses a Hall element, a field plate, a magneto resistive sensor or a bipolar or MOSFET magneto transistor. ADVANTAGE-High miniaturisation.