Details:
The magnetic field generated by the primary-side measurement current passes through the Hall element. The induced Hall voltage is amplified by an op amp circuit and then, through power amplification, generates a compensation current. This current flows through the compensation coil, ensuring that the compensation current’s magnetic field is opposite in direction and equal in magnitude to the primary-side magnetic field, ensuring that the Hall element is always in the zero-flux detection state. This compensation current is linearly related to the primary-side measurement current and accurately reflects changes in the primary current.
This closed-loop current sensor features high accuracy, excellent linearity, minimal temperature drift, fast response time, and zero insertion loss.

Recommended Applications:
UPS, photovoltaic inverters, combiner boxes, switching power supplies, frequency converters, etc.