Closed Loop Current Sensor

The closed-loop Hall current sensor balances the magnetic field generated by the primary current and the magnetic field generated by the secondary coil current. The secondary compensation current is generated through the Hall element and the auxiliary circuit. This current can accurately reflect the changes in the primary current, so it is also called Use the principle of magnetic balance. It has the advantages of fast response time, high precision, good linearity, low temperature drift, wide frequency and so on. Widely used in frequency conversion, servo, motor control drive, electric traction, over-current protection and other types of monitoring.

Model	Rated input(A)	Rated output voltage(V)	Current consumption(mA)	Supply voltage(V)	Overall accuraty(%)	Linearity(%)	Frequency bandwidth-3db(KHz)	Response time(us)	Document
WCB47A	50~100A	/	12+Is mA	±9～±15V DC	±0.5% FS	±0.1% FS	DC～100kHz	＜1us	Download
WCB41A	5A	4V	12+IS mA	±12～±15V DC	±0.7% FS	±0.2% FS	DC～100kHz	＜1us	Download
WCB57A	±25~±100A	±25~±50mA	≤20mA （@±15V ,Ip=0）	±9VDC~±15VDC（±5%)	±0.5%	≤0.1%FS	DC-100KHz	<1us	Download
WCB73A	±1000~v3000A	±200~±600mA	≤35mA （@±15V ,Ip=0）	±15VDC~±24VDC	±0.3%	≤0.1%FS	DC-100KHz	<1us	Download

Closed Loop Current Sensor

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