设置
快速交货
免运费
国际贸易术语
支付类型
市场产品
Another way to sense very high currents up to 1000 A is to use a coreless current sensor, which uses the magnetic field directly from the trace where the current is flowing in order to make its measurement. These sensors are called field current sensors, and they come in typical integrated packages that can be soldered onto a PCB with a minimum footprint because they do not need any field concentrator or shield. They allow users to have an accurate low-cost solution that is elegant and precise for AC or DC current measurements. Nevertheless, they require careful positioning and calibration in order to provide the right measurement back to the system. Thus, it is important to take into account the PCB trace (100 to >400 A measurements) or busbar dimensions (400 A to >1000 A) in order to adjust the sensing range (2.5 to 20 mV/G). The advantages are multiple, but it is particularly the galvanical isolation with a really small PCB footprint while keeping a good stray field rejection thanks to the internal differential Hall plates that make it so attractive for high-current applications such as DC to AC inverters or industrial motor control.
