Description:The MFG-13 series 3D circular Helmholtz coils, when excited by a three-channel excitation power supply, generate a uniform magnetic field at the center of the coils. They feature a large uniform field volume, spacious working area, and easy operation. Capable of providing both AC and DC magnetic fields, the generated magnetic field has excellent linearity with the current. Suitable for research institutes, universities, and enterprises for material magnetic property testing or detection experiments, applied in materials, electronics, biology, medical, aerospace, chemistry, applied physics, and other disciplines. Main applications include: generating standard magnetic fields, canceling and compensating Earth's magnetic field, simulating geomagnetic environment, evaluating magnetic shielding effectiveness, electromagnetic interference simulation experiments, calibrating Hall probes and various magnetometers, studying biological magnetic fields, and investigating material magnetic properties.